quote:Originally posted by redbullssg

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Don't forget that these tires flex, so clearance is an issue, even on some already modded swingarms with 240s.


Tires flex at the contact patch, not at the swingarm. They may expand during a burnout however.[/emoticons/emotion-4.gif]

 

tires expand at the contact patch is true but when you go into a corner hard there is some sidewall deflection.if you have an 1/8" or less of clearance on both sides you will find rub marks on the inside of the swingarm because of deflection.

 

The Metzler 240/40 @ 40psi doesn't flex 1/8" when mounted to a 18 x 8.5 weld-up Warrior wheel. I have a nickels worth of clearance, if that, on my DIY swingarm without any rubbing and well over 6000 miles and no chicken strip either [

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Side wall flexure has a lot to do with tire construction as well as the wheel width and pressure IMO
quote:Originally posted by needawarrior

tires expand at the contact patch is true but when you go into a corner hard there is some sidewall deflection.if you have an 1/8" or less of clearance on both sides you will find rub marks on the inside of the swingarm because of deflection.

 

good thing to know... know where did I put my grinding wheel?

 

No rub marks whatsoever on my swingarm either, 9k+ miles since mod. I've heard the Avons are prone to this however.