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255/40/17 -> 275/40/17 ?


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I currently have 255/40/17 tires on my 17" rims... and am thinking of getting track tires like Michelin Pilot Cup Sport...

unfortunately they don't come in 255 or 265 width like the PS2 but they only come in 275 width...

below is revs per mile from the 255 tire... and also for the 275 series tire... does anybody think there will be a problem ... I'm using the standard 9" rims which tire rack website says will work with 275 width

my front tires are 225/45/17

its going on a 99 C2 with ROW 030 suspension

PS2 tires

255/40ZR17 REVS per MILE 831

265/40ZR17 REVS per MILE 822

Michelin Pilot Cup Sport tires..

275/40ZR17 REVS per MILE 810

Edited by c70Pete
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I currently have 255/40/17 tires on my 17" rims... and am thinking of getting track tires like Michelin Pilot Cup Sport...

unfortunately they don't come in 255 or 265 width like the PS2 but they only come in 275 width...

below is revs per mile from the 255 tire... and also for the 275 series tire... does anybody think there will be a problem ... I'm using the standard 9" rims which tire rack website says will work with 275 width

my front tires are 225/45/17

its going on a 99 C2 with ROW 030 suspension

PS2 tires

255/40ZR17 REVS per MILE 831

265/40ZR17 REVS per MILE 822

Michelin Pilot Cup Sport tires..

275/40ZR17 REVS per MILE 810

275/40/17 should fit ok but they are pretty tall = higher effective gearing/slower turn exit. You may be better off with Kumho's, Toyo's or Yoko's in 17". You don't say what event you are setting up for. If it's a DE just shred some street tires. It's a non competitive event. Who cares? If you are running in a time trials get the widest, stickiest tires your class allows for the timed runs.

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