Upgrading to 245 size for front tires...
12-04-2011, 10:44 PM
#16
Three Wheelin'
Join Date: Jan 2007
Location: Central Massachusetts
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235 X 35% gives a theoretical wall height of 82.25 mm
245 X 40% gives a theoretical wall height of 98 mm
Difference is 15.75 mm or 0.62 inch, so diameter difference would theoretically be 1.24 inch
According to the tirerack table difference is (26.9 - 25.5) 1.4 real world inches, assume with some rounding to one decimal place
245 X 40% gives a theoretical wall height of 98 mm
Difference is 15.75 mm or 0.62 inch, so diameter difference would theoretically be 1.24 inch
According to the tirerack table difference is (26.9 - 25.5) 1.4 real world inches, assume with some rounding to one decimal place
12-05-2011, 10:17 AM
#17
Rennlist Member
Can ppl who moved up a size upfront to 245 let me know the impact it's had?
- Handling? Street or track... I assume less understeer. But does it REALLY improve handling? as the car's suspention is desinged for 235/305.
- Ride? What impact the higher sidewall has?
- Fit? Does it fit ok with no scraping?
- Any changes in speedometer readings?
- Any ill effects, issues that one should watch out for?
Thanks
- Handling? Street or track... I assume less understeer. But does it REALLY improve handling? as the car's suspention is desinged for 235/305.
- Ride? What impact the higher sidewall has?
- Fit? Does it fit ok with no scraping?
- Any changes in speedometer readings?
- Any ill effects, issues that one should watch out for?
Thanks
suspension is not designed for speific tires size, you put on tires that fit best. i run on track on 275/335 tires on 9"/12" 18" rims. on a street i use regular stock 8"/10" rims with 235/275 tires.
only mportant limitation is to maintain proper ratio between front/rear tire diameters - ideally front tire should be close to 25" tall, rear tire should be .6"-1" taller.
12-05-2011, 03:07 PM
#19
Rennlist Member
Thread Starter
245/305 are fine for 8.5"/11" rims. if you have stock 8"/10" wide rims you are better on 235/285 tires. 10" rim takes any tire from 265 to 295.
suspension is not designed for speific tires size, you put on tires that fit best. i run on track on 275/335 tires on 9"/12" 18" rims. on a street i use regular stock 8"/10" rims with 235/275 tires.
only mportant limitation is to maintain proper ratio between front/rear tire diameters - ideally front tire should be close to 25" tall, rear tire should be .6"-1" taller.
suspension is not designed for speific tires size, you put on tires that fit best. i run on track on 275/335 tires on 9"/12" 18" rims. on a street i use regular stock 8"/10" rims with 235/275 tires.
only mportant limitation is to maintain proper ratio between front/rear tire diameters - ideally front tire should be close to 25" tall, rear tire should be .6"-1" taller.
