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Tire Advice for 400lb rider.

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Tire Advice for 400lb rider.

Old 08-12-16, 10:56 PM
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steveortiz1985
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Tire Advice for 400lb rider.

I decided to start riding a bike to work in hopes to improve a better lifestyle and add regular exercise to my agenda. I live approximately 7 miles from work. I purchased a Diamondback Axis XE 27.5. I assumed the wider tires would be enough to support my weight..... I was wrong. As of now my only idea is to add "slime" into the tires, but after a bit of research I believe that would be a bad idea. So here I am looking for any advice and options for a dependable and durable tire solution.
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Old 08-12-16, 11:02 PM
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What size are the tires?

What problem do you have with them?
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Old 08-12-16, 11:19 PM
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Tires are 27.5 inches by 2.5 inches Schwalbe Rapid Rob.
The rear tire flattens almost putting the rim to the ground.
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Old 08-12-16, 11:22 PM
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Use a Good Floor Pump before every ride and pump to 60 PSI.
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Old 08-13-16, 12:41 AM
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What is the pressure rating on your current tires.

It may take some hunting to find some high pressure 650b (584/27.5) tires.

I found these.
https://www.universalcycles.com/shop...9&category=179
Schwalbe Big Ben
650b, 2.0" wide.
70 psi (I think).

It looks like the "performace" tire is a little lighter tire, but rated for a heavier load.

Big Ben - Schwalbe Professional Bike Tires
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Old 08-13-16, 06:46 AM
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You bought a bike that (in theory) is built for riding off road, hence the heavy wide tires with the low pressure. Get a tire designed for road use, that fits your rim. Then pump it up to the highest recommended pressure listed on the sidewall. Your wheel size is 27.5", or sometimes called 650b. Not as many choices in road tires this size as you fine in 700c, but there are some choices out there.

Maybe try the Panaracer Pasela TG or Panaracer Gravel King. The 650B x 38 or 650 x 42 should fit your rims.

(and once you do that, maybe consider switching out that suspension fork, which can't be making things easy for you at your weight)
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Old 08-13-16, 09:25 AM
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Don't be afraid to run your tires above the max listed on the sidewall. Not a ridiculous amount higher, but you can go above the lawyer limit. As you lose weight you can back off on the pressure.


-Kedosto
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Old 08-14-16, 05:53 PM
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Originally Posted by steveortiz1985 View Post
I decided to start riding a bike to work in hopes to improve a better lifestyle and add regular exercise to my agenda. I live approximately 7 miles from work. I purchased a Diamondback Axis XE 27.5. I assumed the wider tires would be enough to support my weight..... I was wrong. As of now my only idea is to add "slime" into the tires, but after a bit of research I believe that would be a bad idea. So here I am looking for any advice and options for a dependable and durable tire solution.
I'm at least your weight and I often will ride with 60lbs of groceries in my backpack and rear basket and so far my Schwalbe Marathon Mondials(Evo Folding version) are functioning like a dream.


I pump the fronts up to 70psi, the rears to 80psi and then over a fortnight or longer, each tyre loses about 10psi, which is pretty good over a fortnight+.


I also went with Schwalbe tubes, but either way, this tyre/tube combo is by far the best I have ever had.


Quality tyres make a big difference.
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Old 08-15-16, 02:41 AM
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When I first started riding to work, I was very nervous about getting flats on the way. My LBS suggested I use heavy duty tubes, the walls of which are about 1/4" thick. I have never had a problem with them. Sure you might go a little slower with them, but the confidence from knowing you will get to where you're headed without a problem is worth the trade off.

I also second the idea of using tires made for riding on the road. I'm particularly fond of the Serfas Drifters I run on my commuter/mountain bike. I just replaced the old 2" tires for a set 1 1/2" tires. Great performance. They also have a flat protection lining, which just leads to more confident riding.
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Old 08-15-16, 07:41 AM
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Pinch flats are a real problem for us big chaps. Make sure you constantly check your tire pressures. Max out the rear pressure especially.
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Old 08-16-16, 05:34 PM
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Not sure if you can get them in 27.5, but Continental Town and Countries have treated me well rolling at 400+.

I suspect Schwalbes would as well.
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Old 08-16-16, 05:44 PM
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Originally Posted by Askel View Post



Not sure if you can get them in 27.5, but Continental Town and Countries have treated me well rolling at 400+.

I suspect Schwalbes would as well.
You are not 400+ pounds - unless you have a 200 pound guy in the cooler.
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Old 08-16-16, 06:55 PM
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Originally Posted by longbeachgary View Post
You are not 400+ pounds - unless you have a 200 pound guy in the cooler.
Pretty sure he's including the ludicrous amount of gear on the bike... I mean crutches? Really?
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Old 08-16-16, 08:21 PM
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Honestly, the tires are unlikely the problem. Schwalbe Rapid Rob are good quality. +1 on running the air pressure a few pounds over the max rated on the rear tire and at max on the front.

When I started, my weight was well north of 300# and I was riding 26 x 1.5" Bontrager H2 commuter tires at their max rated pressure and never had a pinch flat, even on rough roads full of rocks and pot holes.
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Old 08-16-16, 09:04 PM
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Originally Posted by TrojanHorse View Post
Pretty sure he's including the ludicrous amount of gear on the bike... I mean crutches? Really?
Scale readout says 420.
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Old 08-16-16, 09:57 PM
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Originally Posted by jethro56 View Post
Scale readout says 420.
in.... cluding the ludicrous amount of gear. I think there's room for a larger cooler too.
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Old 08-17-16, 07:45 AM
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Originally Posted by steveortiz1985 View Post
Tires are 27.5 inches by 2.5 inches Schwalbe Rapid Rob.
The rear tire flattens almost putting the rim to the ground.
Something is seriously off here. If a 2.5" tire is smashed to the ground, it's flat. I weigh 400+ lbs and have run fat tires far below their maximum PSI and never come close to having one bottom out on me.
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Old 08-18-16, 10:23 AM
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I concur on the air pressure. I ride a hybrid/Comfort bike with 50mm (1.95") x 27.5" tires@60 PSI with no issues at all (I was 387lbs two months ago....367 now). What I do have issues with are spokes, I break three or four a week on the rear tire. My LBS is going to restring my wheel on Monday with better spokes though.
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Old 08-21-16, 07:07 AM
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Originally Posted by DGibson View Post
I concur on the air pressure. I ride a hybrid/Comfort bike with 50mm (1.95") x 27.5" tires@60 PSI with no issues at all (I was 387lbs two months ago....367 now). What I do have issues with are spokes, I break three or four a week on the rear tire. My LBS is going to restring my wheel on Monday with better spokes though.
Maybe different wheels. I have 40 double butted spokes and never a problem. 24 or 32 won't do it.
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Old 08-21-16, 11:15 PM
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I have found that when I hit things like, pot holes, or curbs, my weight is now 10x increased. It's like when you see a 90 pound kid that does a big jump and breaks the frame of the bike in half. So when I ride, and a curb is coming up, I slow down to a crawl and let my self down the curb with each tire, I don't stop, just slow way down. This may not be your issue.
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Old 08-30-16, 07:36 PM
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As a lot of people are saying, the key thing is making sure your tire pressure is where it needs to be.

For comparison I am running 700x38c tires (28 x 1.5 in)and in the rear I have my tire pressure around 85 psi. I'm ~365lbs and ~385lb w. my bookbagand normal riding I am having no issues. The one caveat for me is because I'm riding a Cyclocross bike I can shift some of my weight forward to take some pressure off my back wheel but I digress.

When I started riding again however I was in the same boat as you, almost. The bigger tires with the proper PSI will definitely be able to handle you at that weight. After that the next step is learning how to absorb shocks with your arms & legs, and learning how to unweighted your rear wheel.

Also, how are the wheels themselves holding up? Are you running into any issues w. the spokes or the rim falling out of true (straightness)?
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Old 08-30-16, 09:32 PM
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Hopefully, you're getting things sorted out on the tires.
I'd like to point out that 400-lb riders are fairly rare, but 400-lb tandem teams are not too uncommon, and they still use the same tires as regular bikes. So I can't offer an opinion on the tires you're using, but you should be able to find workable tires for your weight okay.


On the issue of running a bike off curbs, etc.- that wasn't your question, but if you're on the heavy side, just don't ride off a curb, period, fast, slow, or otherwise.
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