TomoHawk Posted October 21, 2002 Share Posted October 21, 2002 What is the largest size tire you can use and still have accurate reading on the stock speedometer? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 21, 2002 Share Posted October 21, 2002 I have slightly larger than stock tires on the Silver Z which makes the odometer read more . I will be going 65mph and the gauge reads 75 which makes me feel all warm and fuzzy. A case of denial but I love it . Quote Link to comment Share on other sites More sharing options...
Mike C Posted October 21, 2002 Share Posted October 21, 2002 What do you mean by largest? As width and height are related, they are still independent. You should try to stay close to the stock height ~25" for speedo accuaracy, but width has nothing to do with it. If you have 3.54 gears, you can run say a 28" tire with the 3.36 speedo gears or if you have 3.70 you can run the tall tire with the 3.54 gears. You could go the other way as well if you were looking for more effective gear ratio. Quote Link to comment Share on other sites More sharing options...
RPMS Posted October 22, 2002 Share Posted October 22, 2002 Originally posted by Tomahawk Z:I have slightly larger than stock tires on the Silver Z which makes the odometer read more . I will be going 65mph and the gauge reads 75 which makes me feel all warm and fuzzy. A case of denial but I love it . Oh, Lordy! Thank your lucky stars if you haven't gotten a ticket by now. If your tires are larger, than they rotate fewer times with each mile traveled, and you're zipping by policemen in that snappy little sports car at 80 mph, rather than the 70 that the speedo reads, or the 60 that you think you're going! Please, try out this Tire Calculator and enter the stock size and what you're running now, just to be sure. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 22, 2002 Share Posted October 22, 2002 RPMS.. what do you mean get a speeding ticket? I lost my license for five years for too many speeding tickets. Nothing like going fast in a Z (and I still do ) Quote Link to comment Share on other sites More sharing options...
Mudge Posted October 23, 2002 Share Posted October 23, 2002 Either count revolutions per mile (tirerack will list this), or just look at the tire height and match them closely. Quote Link to comment Share on other sites More sharing options...
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