Originally Posted by
ongbenghui
Hi, I noticed that roar has a rule on tyre width to be 38mm or lesser, but ifmar does not has such rule. I have speed mind tyre of 39mm, and some tyre of 40mm. Do you run with with wider tyre or true it down ?
At the last IFMAR worlds they measured my tyre width every time at tech. inspection.
http://www.ifmar.org/pdf/rules/ifmar...track_2012.pdf
4.0.4
There it is stated, 13mm minimal and 38mm maximum.
38mm they mean.
Some rims where to wide, and drivers where grinding them smaller while tyre trueing.