Date: Mon, 08 Nov 2004 14:54:39 -0500
From: Fred W <Fred.Willsnospammyrealbox.com>
Subject: Re: OK to mix 195/60/R15 and 195/65 R 15 91V tires?


chris wrote: > "Tomnospamtech" <saabtechnospamnnect.com> wrote in message > news:cmo6u1$t4s$1nospamules.btinternet.com... > >>"madison41" <steve.milmorenospamos.com> wrote in message >>news:fca4b4d745aa881439daf61ae40f0aa4nospamlhost.talkaboutautos.com... >> >>>I have a 1992 Saab 900 convertible turbo. Is it Ok to have 195/60/R15 >>>tires on the back, and 195/65/R15 tires on the front? I have a chance to >>>get four new Pirelli tires, but they don't match. I assume it's not a big >>>deal, that the 60 to 65 won't make a difference in driving or >>>performance. >>>But thought I'd ask. First-time Saab buyer. >>> >> >>No, if the car has ABS, as the different rolling diameter will confuse the >>hell out of the ABS, regards, Tom. >> > > > I had 185/65 front 195/60 rear on my beater 9000i - the ABS was fine. > > Not as much difference there. Let's compare using one tire manufacturer; Michelin Energy MXV4 Plus: Tire size Diameter 195/65-15 24.9" 195/60-15 24.1" 185/65-15 24.5" So using the above stats (pulled from the tirerack.com web site) the difference between 195/60 and 195/65 is 3.3%. The difference between your 185/65 and 195/60's is half that (1.7%). The larger the difference is the more likely you are to get into trouble with the ABS computer. -Fred W

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