4026 N.Tryon St, Charlotte

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We like to display and share with our customers this concern and its answers based on variety of opinions:


Q-it’s not a huge deal to get a lower aspect tire, say a 60 versus a 65, but does it really matter if wheel width is an extra 10 millimeters wide?

A-if their is nothing the tire can rub while turned all the way, and with the strut compacted, then you should be fine.

A-if it were a new car you might be concerned about voiding warranties.

A-10 mm is simply that much more rubber on the surface … and surface contact leads to better stability and traction … thus, perhaps, more safety!

A-Should be OK. When I have upped the width, I lower the aspect ratio so that the rolling radius and circumference is the same. This preserves the intended design geometry, the biggest effect on a front-drive car would be scrub radius which will effect steering pull under braking. I went to 195-60 from a 185-65 I think. The car spec originally had 175-70s but for the new 195s, user feedback said they ran very narrow for their size so I upped two sizes and they were right. As I recall, used to list the specs for the tires they sell. Check your speed and odometer using a measured mile and a stopwatch, if it is way off you might want to return them. Sometimes a larger tire is a good move, but sometimes the tire place has more of them in stock so they push them. A 195 will wear better, have slightly more rolling resistance, but to preserve the same section height you will need a slightly lower section profile, as section height (60, 65) is the percent of section width.

A-Over a 1% error is going to cause problems with the computers, I would think, both engine and maybe with braking calculations.

A-i always go to a bigger tire on my vehicles, it usually takes away from my gas mileage, and maybe a little rougher ride,makes my odometer off by a few miles per hr , but i like the extra height and width.

A-you can’t be serious. Width has nothing to do with the amount of “rubber” in contact with the road. Contact on the road is determined by the weight on the tire and the PSI of the air in the tire.

PSI X surface contact = total weight. Try taking 4 pieces of paper and sliding them up tight to the rubber in contact with the road on all 4 sides of the tread area. Then measure the actual square inches in contact with the road. now measure the air in the tire. multiply those together and save the #. Do all 4 tires and add the final tally…….you will have the weight of the car.

wider tires will change nothing.

A-Unless the slightly wider tire rubs on something, it won’t make any significant difference IMHO. The change in type of tire and rubber compound will make far more difference than the additional 10mm of width. It might be very slightly better, as Brad says, but it isn’t much of a change. I wouldn’t worry about it.

A-The car nuts here at work always go for wider tires for better cornering performance. They’ll generally take the widest tires that will fit without rubbing. There don’t seem to be negative consequences unless you care about gas mileage, and the car nuts only care about performance. I don’t think 10mm will make any difference, as long as they don’t rub anywhere. Even gas mileage should not be impacted very much.