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Huh?
Posted by David M (more from David M) on Tue, 4 Feb 2003 08:45:32
In Reply to: Don't change to 55 series tires, Steve Sheltz, Sun, 2 Feb 2003 20:30:10
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Surprised to hear that. On my Saab I went to a 185-60-15 winter tire and didn't notice an increase in torque. In my Volvo 850T5 wagon I went from a 205-50-16 to a 205-55-16 and didn't notice a decrease in torque. Then again, the wagon has 285 horsepower and 290 ft.lbs of torque (it's not stock).
Diameter between two tires is:
185-60-15
23.74" and 850 revolutions pre mile
205-50-16
24.07" and 838 revolutions per mile
205-55-16
24.88" and 811 revolutions per mile
This represents a 3.22% difference on the 50 to 55 series. Take 3.22% of the torque for your car and it's pretty small. Using 200 ft.lbs it's 6.44 ft.lbs. That's pretty hard to detect.
I live north of Boston in pothole heaven. The extra sidewall is greatly appreciated after replacing one bent rim - ouch!
Happy Saabing
David M
posted by 207.172.10...
Posts in this Thread:
- Don't change to 55 series tires, Steve Sheltz, Sun, 2 Feb 2003 20:30:10
- Huh?, David M, Tue, 4 Feb 2003 08:45:32 <-- Viewing This Message
- Define significant, my 55's didn't do that...., Mike Lynch
, Mon, 3 Feb 2003 20:08:11 - Re: Don't change to 55 series tires, Atul, Mon, 3 Feb 2003 11:21:49
- Hmm...I don't have a problem with mine, Mr. Science, Mon, 3 Feb 2003 09:03:15
- Re: Don't change to 55 series tires, Schu, Mon, 3 Feb 2003 07:55:42
- Re: Don't change to 55 series tires, Ben, Sun, 2 Feb 2003 22:28:53
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