tire sizes for cobra r's

[fivespeedsteed]

ok so i think i decided to get some cobra r's soon, and i was wondering what size tire i need to keep the same diameter so i wont have to get a new speedo gear or have any reprogramming done. i want 275's in the back if possible. im planninng on 17"x9" cobra rs by the way. thanks.

 

[fiveofanatic]

Best is 255/40 all the way around, though 275/40's should work without too much hassle in back.

 

[mineralgsvt]

245/45 F, 275/40 R

 

[txblackmach1]

yea what he said!

245/45 F, 275/40 R

 

[ATI_blown92]

as long as you removed those silly quad shocks theres no prob, im ryunning 275/40/17s no rubbing no prob n thats with my 3in tru duals

 

[fivespeedsteed]

would 275/40/17 back and 245/45/17 front mess up my speedo calibration? is 245 fine for the front or should i go 255/40?

 

[IntenseBlue]

Shouldn't mess up your speedo calibration. It might read 1mph slower with the 275/50/17s. I'd go with 255/40/17 all around. If you did that, it'd probably read 2-3 mph higher than stock.

 

[powertrax91]

I'm running 255/40/17 front & 265/40/17 out back...
anything larger than 255s out back may require clearancing

 

[Mustang5L5]

245/45/17's front and 275/40/17's rear

Those two sizes will keep the tire close to stock to keep the speedo on target