<VV> Cooper Trendsetter SE Tires

[Bruce Schug]

On Mar 20, 2007, at 3:50 PM, LABRANCHE, RICHARD C wrote:

> If 175/80/13 (which have tire height of 24.65) are close to the 
> original
> size HOW can you go with a 205/60/13 which has a tire height of 22.69.
> Wouldn't that raise the RPMs considerably being a full 2 inches
> different?
>
> Reading and learning here................keep up the good words.
>
>
> Bob,
>
> You realize, of course, that 175/80-13's are smaller than original
> 6.50-13's anyway. 185/80-13's are very close to original 6.50-13's in
> diameter. Just use 185's and don't feel bad about not being able to get
> 175's. If you want something shorter and wider try to find some
> 205/60-13's.
>
> Bruce
>
>
> Bruce W. Schug


6.50-13's were about 24.5" diameter.

175/80-13's are about 24.0"

185/80-13's are about 24.7"

205/60-13's are about 22.69"

The above dimensions are mathematical. Actual tires will vary. The 
175/80 you describe is quite tall for a 175/80. Read the manufacturer's 
specifications before purchasing to know what you're getting.

As I said in my post, "If you want something shorter and wider try to 
find some 205/60-13's." I didn't mean to suggest that a 205/60 was the 
same diameter as a 6.50-13. It is, in fact, quite a bit smaller. Some 
guys aren't interested in maintaining the original tire height and 
would prefer to lower the car a bit and have more width. That's what I 
meant. And yes, the 205/60 will increase rpm about 7%. In other words, 
instead of running 3,000 at a particular speed you'll run about 3,239. 
Ya' pays yer money and ya takes yer choice.

Bruce



Bruce W. Schug
President, CORSA South Carolina
Greenville, SC
bwschug at charter.net

CORSA member since 1981

'67 Monza. "67AC140"