Tire and Speedo question
#1
Tire and Speedo question
Ok, so I am about to mount and run 19" wheels. 9.5" rear 8" front.
I have 2 rear tires, 275/35 that I boought from stclair who pulled them off the wheels he just bought. He also has the front tires of said wheels that are 245/35. The guy who owned the wheels before him knew his **** and is extremely car oriented.
My question is, can I run these and not have any problems?
the diameters are;
245/35
Overall Diameter: 25.75 in 654.05 mm
275/35
Overall Diameter: 26.57 in 674.87 mm
which gives me about a 3% difference, which will make my car run 3% slower on the speedometer right? So when I'm going 100kms, I'm really be going 96.
Is this really a problem, does anyone drive like this?
I have 2 rear tires, 275/35 that I boought from stclair who pulled them off the wheels he just bought. He also has the front tires of said wheels that are 245/35. The guy who owned the wheels before him knew his **** and is extremely car oriented.
My question is, can I run these and not have any problems?
the diameters are;
245/35
Overall Diameter: 25.75 in 654.05 mm
275/35
Overall Diameter: 26.57 in 674.87 mm
which gives me about a 3% difference, which will make my car run 3% slower on the speedometer right? So when I'm going 100kms, I'm really be going 96.
Is this really a problem, does anyone drive like this?
#2
#4
#5
#6
3% faster isn't it? Same revolutions, more distance covered. Reading 100, doing 103. Except you should be comparing to the stock size, not the front size, so really only 1% as Jeff's post pointed out.
No big deal. Except if you were actually talking about swimwear. Then no.
No big deal. Except if you were actually talking about swimwear. Then no.
Last edited by Swivel; 03-15-2010 at 06:55 PM.
#7
This is what I run:
This is what you want to run:
Although your sizes have a bigger difference, I'd say you're within acceptable limits. I remember the general limit being 5% or something
Tire Size Comparison
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
225/40-19 3.5in 13.0in 26.1in 82.0in 773 0.0%
255/35-19 3.5in 13.0in 26.0in 81.8in 775 -0.2%
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
225/40-19 3.5in 13.0in 26.1in 82.0in 773 0.0%
255/35-19 3.5in 13.0in 26.0in 81.8in 775 -0.2%
Tire Size Comparison
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
245/35-19 3.4in 12.9in 25.8in 80.9in 783 0.0%
275/35-19 3.8in 13.3in 26.6in 83.5in 759 3.2%
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
245/35-19 3.4in 12.9in 25.8in 80.9in 783 0.0%
275/35-19 3.8in 13.3in 26.6in 83.5in 759 3.2%
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#10
#13
Wow. Didn't know wider tires would change the diameter. I only throught it was the profile that changed the diameter.
I gotta get tires for my new rims coming (axis pentas). I've got 19x8.5 front and 19x9.5 rear.
What is the proper tire width range for 8.5 and 9.5?
I was thinking of getting 235-35 front and 265-35 rear. How's this setup?
Also why do people get higher profile up front or rear?
What tire size do u guys recommend? I've got awd.
Thanks
I gotta get tires for my new rims coming (axis pentas). I've got 19x8.5 front and 19x9.5 rear.
What is the proper tire width range for 8.5 and 9.5?
I was thinking of getting 235-35 front and 265-35 rear. How's this setup?
Also why do people get higher profile up front or rear?
What tire size do u guys recommend? I've got awd.
Thanks
#14
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