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How Do Tyres Affect Your EMTB’s Battery Range?

How Do Tyres Affect Your EMTB’s Battery Range?

– We all want a little bit more out of our e-mountain bikes, right? The ability to go the extra mile. And one of the simplest ways of doing this is actually by your choice of tire. In this video, we’re going to
be looking at the differences and the detail and the range between different treat
patterns and compounds. (upbeat music) Now, tire choice affects other things as well as battery range, such things as your speed,
your control on the trail, and of course your heart rate, and these are going to
be some of the things we’ll be picking up on in this video. (upbeat music)
(bike tires zipping) We’re going to be riding a range
of trial and surface today, from tarmac to fire road,
technical single track, and of course some uphill trials. We’re also going to be using
two different types of tire, a technical downhill tire and
a more low profile trial tire. Now, seeing as Maxxis are a partner, we’ll be using their tires in this video. However, the results will give an insight into any tire brand. Let’s start off then with a softer and more aggressive pairing for today. On the bike here at the minute, I have the Maxxis Assegai. Now, this is a full on world
cup downhill condition tire, but it’s also really good
for e-bike use as well, because it’s so aggressive. Weighs in at 2.94 pounds, it’s 2.5 wide, really aggressive tread
pattern, as I mentioned, plus it’s really soft compound. At the front we’ve got a Minion DHF. That’s also soft compound and also a 2.5. Okay, we’re about ready to role. There’s a big hill ahead of us. It’s broken down into
three distinct section, tarmac, fire road, and technical. So, we’re going to be looking at the data of each of those sections. So, to be able to measure our data today, we’re using the specialized
Mission Control app on my phone, and we’re riding
in turbo mode on the e-bike, and in terms of my heart rate, I’m going to use my
Garmin on my wrist here. (timer beeping) See you in a minute. (energetic music)
(bike wheels zipping) Oh, heart rate was certainly pretty high with these super soft compound tires. Average heart rate, 118 beats per minute, and maximum heart rate, 142 beat a minute. It’s a average speed, 14.4 mile per hour. Maximum speed, 21.0 mile an hour. And the total time, 3:27 minutes. What’s quite interesting is
when you’re on a tarmac road, it’s very easy to get above the 25 kilometer
an hour restriction. So, on a tarmac road I would imagine it’s going to be above that. So, wouldn’t actually be
using that much battery. So, it would be interesting to compare with the low profile tires later on. Obviously, the critical
win on this challenge is I actually used 2%
battery on the tarmac stage, like I said, because you’re riding above that 25 kilometer an hour, the 15 mile hour restriction then, obviously, it’s going
to use far less battery. We then went through a short transition and moved swiftly on to the
fire road sector of the climb, and it was here that we
expected the speed to be slower and be taking more drain on the battery. (upbeat music)
(wheels zipping) So, we’re all in for
one fire road section. Now, this is type of ride,
I’m sure, most of us do. It’s been wet here in the
U.K. for quite a few months. So, the going is quite heavy. So, that’s going to take a
lot more drag out of the bike, a lot more energy out of that battery. This time this took was seven minutes. The average speed was 13.8 miles an hour, so under the 15 mile an hour, which means the battery and
the motor is actually working compared to the road where
we were above that zone. My heart rate, 126 beats
per minute average, and 138 tops, which means it
was more of a consistent ride than that on the tarmac road, but the all important battery consumption. Well, it looks like I
used 9% of the battery on that seven minute stage alone. (upbeat music)
(bike wheels zipping) And so then to the last
sector of this mixed climb and definitely the toughest,
roots, ruts, and soft mud. Surely, at the end of the day, this is where the soft
tire will score the highest and where the low profile
dry tire will slip back, so to speak. (upbeat music)
(bike wheels zipping) Wooh, boom, there you go. Six minutes, 19 seconds,
average speed, 7.7 mile an hour, maximum speed, 17.4 mile hour, 124 beats a minute
average of my heart rate and 142 beats per minute maximum. What about the battery consumption on the Assegai Minion DHF combination? Oh, 9% for that last technical section. The combined times are in
then for the soft tire attempt as I quickly swapped over to
the dry-style summer tires. (energetic music) Now, as you can see, we’re fitting something
all together different from the first run. This is much more of a dry weather tire. It’s a Maxxis Cross Mark 2.25. It’s much lower profile. It’s a harder compounds
than the Assegai tire, and up front, I’ve
actually got a Minion SS. So, this is slightly bigger. This is 2.3, but again, you
can see that low profile there, which hopefully will mean
more range from the battery. So, here we are then, back
at the start of the hill. Now, it’s going to be
really interesting to see the effect that these harder
compound, lower profile tires have not just on the
battery range of the bike, but also on such things as my heart rate, and also the speed across the ground, no more so than on this
first tarmac section. Now, we’ve really just got down here, and already I can feel
that the rolling resistance is far less on these tires than on those super sticky Assegais. (upbeat music)
(timer beeping) Can’t wait. (upbeat music)
(bike tires zipping) Oh, oh, boy, crikey. Sort of rises. First thing’s first, battery, wow. So, that actually only
used 1% of the battery. Right, so that’s the battery, almost half the power used
compared to the first run on the soft compound tires, but what about my stats on
that time stage on tarmac? Well, look at the time, 3:12 minutes. So, that’s considerably faster
than on the super soft tires. Average speed, 17.1 mile an hour, and a maximum speed of 22.6 miles an hour. So, that proves that actually on average, I wasn’t using any motor or
any battery on that time stage on the tarmac. So, obviously, that
proves in the stats there. Now, average heart rate
130 beats per minute, which proves again that I’m
above the threshold limit and all the effort is my own. Maximum heart rate 146. And so then to the fire road, a place where, surely,
the lower profile tires would simply make even
more massive inroads into the soft tires. (upbeat music)
(bike tires zipping) Okay, okay, so first of all, the critical number,
the batter consumption, okay, I think the first climb up there it was 9% battery consumption. This time, 6%. Now, that’s just on a short
six minute uphill section. So, you can imagine multiplying
that throughout a day, that’s going to be a considerable saving. Right, time for my own stats
on the fire road climb section, and this time it was
6 minutes, 12 seconds. I seem to recall last time
was closer to seven minutes. The average speed, 14.6 miles an hour, and a max speed of 26 mile hour. So, again, that shows that on average, we are underneath the
threshold limit of the motor. Average heart rate 130 beats per minute, and maximum heart rate, 145. So, quite similar to last time. But the big news from this section, once you move from tarmac to off road and you’re underneath that threshold, that 25 kilometer an hour,
15 mile an hour threshold, it shows that there
really is some difference between low profile dry
weather tires and sticky tires, but one more stage to go, and remember, we still need to get up to the top of the hill. So, can these low
profile dry weather tires get through that mud? Let’s go and find out. And so, to the final
technical stage of the climb. Well, it appears that we
are saving battery power on the low profile tires. It seems that we’re quicker
on time to this point, but we’ve got this super
slippery technical section ahead of us. What I’m thinking is can we
actually get up through that because of the dry weather
nature of the tires, and will we be losing time because going to grip on the back tire, plus if that back tire is spinning, is that going to be
actually using more battery than the sticky tires? Three. (upbeat music)
(bike tires zipping) Now, going into the last
stage, the low profile tires were already over a minute up on time over the softer, more aggressive tires. Surely, there was no way a
soft, wet rooty tech climb would make that much difference, or would it? (upbeat music) Agh, skills. (upbeat music) Final climb of the final over a minute seems again that those
low profile summer tires have the edge over the sticky tires, this time 7% battery
consumption compared to 9% on the Assegai tires. What about my own numbers, then? Well, it looks like it
took me 5:50 minutes to do the climb, an average
speed of nine mile an hour, my average heart rate
was 135 beats per minute. So, again, still quite a workout even with the low profile
harder compound tires. I really didn’t think I was
going to get through the sticky, boggy section, and I’m sure that there was some actually added battery
consumption through there because the tires were spinning, but overall in this video, I think we’ve actually found
out what we set out achieve, which is that the low profile, narrower, harder compound tires are
better on battery consumption than the sticky tires. And I think this is
really important of guys who have gone for big days
out on smoother single tracks and fire roads, and maybe grass conditions such as this here. Also, has an effect for
people doing endure racing, not only in their range
that they can accomplish, but also in the times on the nasal stages. You can see more about tires. I’ve gone absolutely bonkers on tires in the video which I’ve
left just down there below, and let us know your thoughts on tires. What tires are you guys using? What tire pressures, what compounds, what tread patterns has a huge,
huge effect on tire range. And I think we only just
dipped into the subject. Thumbs up if you like the video, and hit the globe to subscribe to EMBN.

44 comments on “How Do Tyres Affect Your EMTB’s Battery Range?

  1. This is quite an eye opener, I thought you’d be much slower on hard compound through the tech section due to all that sliding around.
    The biggest drawback to running tubeless is the inability to make a swift tyre change though.
    Unless of course you happen to have a pair of wheels you prepared earlier…….get down Shep!

  2. Did the same test with a de restricted Haibike,makes no difference to mileage/battery usage if you’re always above 15.5mph on the flat.

  3. If you want range stay off the deep tread, I have city t..y..res on my homebuild and it copes with 80% of off road.

  4. I previously had cube acid on rapid rob tires and was able to make huge ranges and it felt so light to ride it. Than I switched to turbo levo and it felt like a tank to drive. Also the range dropped down significantly. Now in know why… Butchers are good at curves but they roll slowly. It's s a good time to change. Thanks a lot! 🍻 very good job!👍

  5. Great video I knew the lower profile would win another point to consider is fatigue could the lower profile numbers of been even better if you ride them 1st with fresh legs

  6. There you go. Soft blingy expensive quicker wearing tire or harder longer wearing more economical tire which won every challenge. Hmmmmmmmmm. Looks or performance. Some will always choose looks to impress others at the expense of themselves.

  7. Did you put a fresh fully charged battery on the bike for each test? Other wise it was not a completely fair test? With 18650 cells what the battery packs are made up of the first part of the charge when the cells are fully charged at 4.2 volts the first part of the charge will drop faster then stabilise out and discharge a bit slower when you get to about 70% charge. If dont think the results would differ much just slightly less difference

  8. Hi, I'm currently working on my final year product design project at University looking into charging stations for E-bikes. I have set up a survey aimed at E-bike owners to gain insights for the research stage of my project. It would be great if you could take the time to complete it. The link is:


  9. Both my emtb (Scott Aspect e-ride 20) and my manual mtb (2014 Kona Hei Hei Hei) came fitted with Maxxis Ikon – 29×2.6 and 29×2.3 respectively, low profile tyres, which are lovely on dry, hard surfaces but absolutely hopeless in any sort of mud or dampness.  No lateral grip and no shoulder grip – slide around all over the place!  I was also finding them surprisingly slow on tarmac.  So, the Kona acquired some proper old-school more aggressive cross-country/all-terrain Panaracer Fire tyres, like I'd been riding for years on my old 26" Orange Gringo, which transformed the ride in all conditions – ride through the muddy holes smiling, not around them worrying.  The Scott has wider tyres fitted and, it being a hardtail,  I didn't want to lose that wee bit of extra cushioning so, as Panaracer don't seem to do a 29×2.6 Fire, I went for some Schwalbe Hans Dampf.  Most of my rides include a little tarmac, some logging/hunting tracks, rocky sections and a fair bit of mud.  They seem perfectly suited to that and have impressed me on ice and snow.  Maybe I could save a little battery with some lower profile tyres but I'd sooner have more capable ones.  Yesterday I rode 22 miles of mostly rocks and bog complete with some short rocky technical climbs up into a mountain pass at 1 degree C, which used just over half a battery – not too bad considering I'm nearly 18 stone (112kg) – with rider weight being the other big range-killer.  So far I've found the worst thing for battery range to be a cold headwind.  A few weeks ago I used 4/5 of my battery power in 10 miles of riding up a fairly moderate gradient but with a steady 40-50mph headwind at around minus 6 C.

  10. Nothing makes a bigger difference than air pressure. Give me a hard compound tire and run it low psi gonna give me the same traction as a soft compound ran at high pressure. It's all about the psi.

  11. Did a 9 miler yesterday in the fat burn zone, steadily turning pedals, 2 climbs with 1421ft elevation gain and only one bar of battery lost, seems to work well for making the battery last.

  12. Sorry Steve it’s TYRE! – Sphell cheker – now that said interesting video – most of mtb is off road so I’m happy with the stock levo butcher and play around with tyre pressure – biggest killer Range is temperature and weight

  13. I'm from Belgium and was a bit confused …
    "Tire and tyre both mean a covering for a wheel, usually made of rubber. Tire is the preferred spelling in the U.S. and Canada. Tyre is preferred in most varieties of English outside North America. Of course, all English speakers use tire in the sense to grow weary."

  14. I run same tyres all year round with 40psi up front and 35psi rear on my hard tail ebike, like Daniel Bedingfield says " I gotta get through this" " I gotta get through this" plus can't afford lots of other tyres as bike cost me an arm and leg, not literally

  15. 15 mph limit suckks tho, is too slow, a rider can easily hit and maintain a higher speed than that. I built my own ebike and my average speed with pedal assist is 21 mph, and is way better than 15 mph to be able to keep up with traffic. I noticed that driver are less bothered now that I can ride quicker than before on the limited 15 mph bike. But I went maybe too big, 2000w motor is kinda useless when even the steepest of the hill is climbed at about 20 mph using only around 500w…

  16. They weren’t only better on the battery they were faster everywhere, even on wet roots and mud 🤷🏻‍♂️ proves to me that most riders are running way too aggressive tyres on both emtb and mtb for where they actually ride.

  17. Been running maxxis dhf-dd 2.5 in rear and dhf exo 2.5 in front. Been considering a 2.3 or 2.4 in rear. Still need double down in rear, I blow everything else up. Would like almost as good of grip just lighter.

  18. Hmm, I'm not too sure about this as surely the time and battery usage depends still on the variance of how much effort you put in on each test.

  19. So 4.8 inch wide fat tires may not beat my 0.91 inch road tires for range, got it! Lol, I’ll have to see what the ranges are like for that, but then again it’s 2 different bikes and motors (will be the same battery and possibly even motor controller).

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