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Is it more important to have a better rolling tyre on the back than it is on the front?
Or other words it ok to put a draggy/gripy tyre on the front as it won't make much difference from a less draggy one.
Yes
For me its more about cornering grip versus rolling resistance. Grippy on the front and low rolling and slidy on the back. Its okay if the rear takes the occasional holiday! 😉
Rolling resistance is quite complex as it is a combination of friction, case deformation, tyre pressure, terrain e.t.c but friction is proportional to the normal reaction so because a rear tyre carries more weight than the front it has more friction.
You won't really notice putting a slow rolling tyre on the front.
You will notice massively a slow rolling tyre on the rear.
When you're sat on the bike, most of your weight is on the rear tyre, ergo it's the one that makes the biggest difference...
So as an aside does anyone here run different tyre pressures front and rear.
So as an aside does anyone here run different tyre pressures front and rear.
Yep - always higher in the rear tyre by at least 5psi.
I nearly always run different pressures F+R ... also quite often run different tyres, sizes, models and brands.
Doesn't everyone?
Oh who am I to give advice. I withdraw my ramblings. Twas right though 😉
Yes, about 25% harder at the back than the front.
What did you say Swede? I must have missed it.
Wow - 2 for 1 deal on tyre knowledge! Sweet.
I ask because a lot of people on here will say what tyres they run and at what sort of pressure but rarely mention running different front and rear pressures. It makes sense due to weight distribution although I guess that distribution can vary significantly as you move around on the bike and braking must also have quite an affect.
i mentioned running different front;rear pressures on my road bike on here and almost got burnt at a stake!
i normally pump my tyres up to the same and then let them down by diffrent amounts.
On my FS I run a narrower tyre at the back than the front.
When it's a bit wet/muddy I run a 2.1" NN on the back and a 2.25" NN on the front, in the dry I have a 2.1" RR on the rear with the same on the front.
On a dry/fireroad/drawn out climb you can certainly feel the difference between the NN and the RR on the back
Pressure wise I tend to have 30-32psi in the front and 35-40psi in the rear.
On my HT it tends to be the same tyre front and rear, but again similar pressures as in the case of the FS.
Thing is harder rear tyres sound sensible but you lose too much grip on downhill and can't corner to your bikes full potential.
i always to the same tyres front and rear cause it looks right
i always to the same tyres front and rear cause it looks right
isn't the whole idea that it works better than how it looks?
Higher pressure on the rear and different tyre/width often too.
Eg summer: Panaracer Razer 2.3 on front 30psi, WTB Nanraptor rear 2.1 35-40psi
The fact that your expending brain-time on this subject is beyond me....rolling res on a mountain bike...go figure girl-friend 😯 😛