rear wheel size .. 8 or 9 inch ???

[lee37vernon]

i know that either having 18 or 20 inch tyres will alter gearing , but exactly how much ?

what size wheels are best suited to which types of riding ??

[AtvMxRider]

8" for mx 9" for trails

[TheFontMaster]

In general what Jerry said is right, thats the general rule of thumb. But I do see some people run a 20in tire on an 8in rim. The point of that is to give the tire a little more flex when hitting bumps, ruts, etc. The downfall with that is that there will be more roll in the tires when you corner.

[86 Quad R]

ideally. i like to run a 8" x 18" - 9" x 20" - 10" x 21, 22" it's less side wall flex in the corners.