[DeTomaso] Tire question

[pantdino at aol.com]

 It is important to actually go to the manufacturer's site, as Mike suggests, as tires in the same nominal size can vary SIGNIFICANTLY from each other.? There are many instances where I have found, for example, a 245 of one manufacturer to have the same width as a 255 of another.? 

Look at both the cross section and tread width numbers, if available, depending on where you are afraid a bigger tire may interfere with your car's metal parts--the sidewall can hit the shock or strut, the tread edge can hit the fender lip.

A smaller tire will lower the car somewhat (5mm in this case--about 1/5 of an inch) and not fill the wheel well as well visually. It will also make your speedometer read a little high, but not markedly so.

Jim


 


 

-----Original Message-----
From: MikeLDrew at aol.com
To: timepiecepr2 at yahoo.com; detomaso at realbig.com
Sent: Thu, 27 Dec 2007 8:09 pm
Subject: Re: [DeTomaso] Tire question











In a message dated 12/27/07 19 54 52, timepiecepr2 at yahoo.com writes:


> ? I am looking at a set of tires for my AC Mark IV (Cobra).? Can anyone 
> tell me the difference in dimensions between a 245/50R16 and a 255/50R16?? 
> 
>>>Uh...10mm. :>)


> The car is now shod in the rear with the 255, but they don't have its 
> replacement.? Will the 245 be ok as a replacement?? The front is a 225/50R16.?
> 
>>>It will probably be fine.   The section width (that is, the width of the 
widest part of the 'bulge' in the sidewall, normally halfway between the rim 
and the surface of the tire) will be nominally 10mm narrower.   Too, the tire 
will be marginally shorter, since the section height is expressed as a 
percentage of the width (in this case, 50 percent, which is what the '50' means 
in the 
tire size).   So the section height (distance from the rim mounting surface to 
the tread) will be nominally exactly half the section width, or in this case, 
122.5mm.   Your old tires would have been nominally 127.5mm, so the overall 
difference in height would be about 10mm (5mm less at the top, 5mm at the 
bottom).
> ??
> ? Anyone have any experience with the Potenza RE960 AS Pole Position?
> 
No first-hand experience, although I have been thrilled with the Bridgestone 
Potenza RE750 (I run them on my Sciroccos, and in fact just mounted up a new 
set of 205/50-15s on the silver one today).

All you would ever want to know about the tire sizes etc. can easily be found 
on the manufacturer's website.   Here's the specs for the RE960, with all the 
various heights, widths, wear ratings etc.

http://www.bridgestonetire.com/tireselector/SizeSpecs_BS_EN.aspx?Product_ID=11
12

Cheers!

Mike



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