rim width

[devo]

You can run a 5.5" tyre on a 4.25" rim no worries right?

There must be some effect on handling with the way that the tyre sits on the rim though. What's the go? Negligible or worth getting a wider rim?

[motard_mike]

id say a 150 rear is ideal for the tard.

[devo]

a 150 tyre though yeah?

[Wobbly]

150 on a 4.25, 160 on a 5.0 (or 4.5). Go to wide a tyre on a narrow rim and you will pinch the tyre inward, effectively increasing the profile of it, reducing your contact patch and making the very edge of the tyre unusable. It may also try and roll off the side of the tyre more during cornering making it feel a bit sketchy.

Go the other way and you'll spread the tyre over the rim too much, flattening it out and causing it to be a bit recalcitrant in turning in and subject to falling off the edge of the tyre.

These aren't huge problems if you've already got a tyre of a particular size and just want to use it, but given a clean sheet of paper and your open wallet, go for the right tyre for the right rim size.....

[Wobbly]

And a 150/60 is the right size for a 4.25" rim

[Sibbo]

Dont put a 180 onto a 5 inch rim and deffinatly dont put a 190 onto a 5 inch rim, as my next tyre for the 6r will be! Seeing I get my tyres for nothing, I sort of take what I get and I have a 180 on it at the moment and I just picked up a 190......so it will look retarded and not handle.

But I only do this for experimential reasons, as to show you all NOT what to do. I also only ride the bike to work, so grip is not an issue.

When purchasing (thats a strange word for me) rubber, get it in the correct size, not the bigest that will fit. Only morons do that.

[devo]

Got it. :)

Thanks again all!

[Tom]

This is a 165 bridgestone (made for a 5.5 rim) on a 4.25 rim.

http://img10.picsplace.to/18/IMGP1494s.JPG (http://picsplace.to/)

The edges get pinched in as neil said. But the only race tyres made for a 4.25 rim are Maxxis and Shinko (both crap from what i hear).

Yes the edge is unuseable and the profile is changed, but sometimes good rubber with a bad profile is better than bad rubber with a good profile.

Best solution is to use a 5 or 5.5 inch rim, but after doing some research recently i found out just how expensive these are ($500+ just for the rim!!!).

[devo]

I think that by the time my tyres are my only limiting factor I will need a new bike, let alone new rims. ;)

[shane]

This is a 165 bridgestone (made for a 5.5 rim) on a 4.25 rim.


The edges get pinched in as neil said. But the only race tyres made for a 4.25 rim are Maxxis and Shinko (both crap from what i hear).

Yes the edge is unuseable and the profile is changed, but sometimes good rubber with a bad profile is better than bad rubber with a good profile.

Best solution is to use a 5 or 5.5 inch rim, but after doing some research recently i found out just how expensive these are ($500+ just for the rim!!!).
i have a brigstone 165 on mine right now 5.5 rim , and its perfect little balls of rubber hanging off the edges , makes the bike feels much better in the corner when you have the right rim/tire match up