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Old 11-19-2005, 06:46 AM
red95svx
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Tire size advice

My Forester has the stock 215/60/16 tires on it. I'd like to put snow tires on soon and I have acccess to a decent used set of 205/55/16 snow tires. Obviously these would be more narrow and the sidewall would be a little shorter, but is there any reason I shouldn't use 205/55/16's??? Is there a way to figure out speedo error with a shorter tire?




Dave
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Old 11-19-2005, 09:06 AM
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Quote:
Originally Posted by red95svx
My Forester has the stock 215/60/16 tires on it. I'd like to put snow tires on soon and I have acccess to a decent used set of 205/55/16 snow tires. Obviously these would be more narrow and the sidewall would be a little shorter, but is there any reason I shouldn't use 205/55/16's??? Is there a way to figure out speedo error with a shorter tire?
Hey Dave,

Use this: http://www.geocities.com/z_design_studio/

It'll ask you to plug in the gear ratios, final drive as well as tire size. You can adjust the tire size to see the difference.

-Chike
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  #3  
Old 11-19-2005, 09:07 AM
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Quote:
Originally Posted by red95svx
My Forester has the stock 215/60/16 tires on it. I'd like to put snow tires on soon and I have acccess to a decent used set of 205/55/16 snow tires. Obviously these would be more narrow and the sidewall would be a little shorter, but is there any reason I shouldn't use 205/55/16's??? Is there a way to figure out speedo error with a shorter tire?

Dave
The stock 215/60s are about 26.2" tall. The 205/55's will be about 1.3" shorter. They will read about 5% slow, so when the speedo reads 60 mph, you'll actually be going 57 mph.

A 205/60 would be 0.5" shorter, and the speedo would read slow by 2% (60 mph is really 59 mph).

You could use either size, provided those sizes are available in the tire you want.
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Old 11-19-2005, 10:36 AM
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Nice! Thanks guys!!!




Dave
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Old 11-21-2005, 10:27 AM
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If they are available you could also get 205/65-16's for a total height of 26.5"
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