tire choices

[mxrider992]

hi...i have a 1989 suzuki rmx250. the stock tire size is a 110/100-18. will a 120/100-18 tire hit the swingarm and adversely affect the bike? how about a 110/90-18? will less sidewall affect how it handles?

thanks

 

[biglou]

hi...i have a 1989 suzuki rmx250. the stock tire size is a 110/100-18. will a 120/100-18 tire hit the swingarm?

Maybe. It's 10mm wider overall (5mm per side)

how about a 110/90-18?

Nope. Same width as stock, but with 10% less sidewall

will less sidewall affect how it handles?

thanks

Potentially. Less tire to flex when crossing logs or sharp edges in the trail. Slightly more prone to pinch flats. Would you feel the difference? I probably wouldn't.

Another thing to consider: Different mfr's tire sizes tend to vary a bit. I think Michelin used to be WAY small for their indicated size, but I believe they changed that a couple years ago and are now consistant with other tire makers. Overall the difference is minimal, but if you happen to choose a brand that's a bit big, and get a wider tire than stock, it may interfere with the swingarm or chain. There's no real way to determine this ahead of time as far an I know...

Why a different size? Good price? Looking to change something?

 

[Rotorranch]

I have a 130-80x18 on my RMX...no clearance problems. :cool:

Rotor

 

[mxrider992]

thanks guys

i currently have a dunlop 756 100/100-18 tire on my bike. i am looking into another 756 (in 110/100-18), a 739 (in 110/100-18), or maybe a 952 (in 110/90-18 or 120/90-18)

i ride mainly hardpack

thanks for the suggestions