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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / April 2007tire size
is it ok to have front tires with aspect ratio 60 and rear 55? or they all need to be the same profile? Same profile is best, but the ratios are okay if those are the tires you decide to mount.  SignatureKnifeblade_03 http://www.automotiveforums.com > is it ok to have front tires with aspect ratio 60 and rear 55? or > they all need to be the same profile? It is OK. Proof: GM mfg'd Vettes with different sizes on front and rear! Some even had wider wheels on one end. If those tires you mentioned were same brand & were measured side-by-side, I'd bet you would see very little difference, both in total height and width. BTW: I personally agree with knifeblade's(above) preference of having same profile. s you might want to look into this a little more, 2 differant size tires may cause erratic reading on the speed sensors& creat abs brake trouble. depending on car. Signaturesnupytcb http://www.automotiveforums.com > you might want to look into this a little more, 2 differant size tires > may cause erratic reading on the speed sensors& creat abs brake > trouble. depending on car. absolute heighth is All that matters to ABS.....different aspect ratio is very normal in many apps. these days SignatureThe Source For Premium Newsgroup Access Great Speed, Great Retention 1 GB/Day for only $8.95 it's fine. as long as you're not changing total diameter, your speedometer will read accurately. i have wider tires on the back than the front. this is the case with many many many car owners. sports cars leave the factory that way. IMHO i'd still maintain the same aspect ratio (the middle number) like 265/50/15+305/50/16 it just helps the overall visual effect. Signaturemr_mushroom http://www.automotiveforums.com snupytcb Wrote: > you might want to look into this a little more, 2 differant size tires > may cause erratic reading on the speed sensors& creat abs brake > trouble. depending on car. How exactly do I check into this? My mechanic just told me that the recent problems I've been having may be due to the fact that my front tires are one size & my rear tires another. All tires were purchased at the same time (one yer ago), a few months later my abs sensor went & my brakes which had been repalced a year earlier were completely worn. I want to know the facts for when I go back to PepBoys (where I bought the tires) to get them replaced. Signatureleen369 http://www.automotiveforums.com > snupytcb Wrote: >> you might want to look into this a little more, 2 differant size tires [quoted text clipped - 8 lines] > I want to know the facts for when I go back to PepBoys (where I bought > the tires) to get them replaced. WHAT sizes are you talking about? Same diameter shouldn't make a difference. Noozer Wrote: > > snupytcb Wrote: > >> you might want to look into this a little more, 2 differant size [quoted text clipped - 16 lines] > > Same diameter shouldn't make a difference. My receipt says I purchased 4 P235/75R15 but my mechanic says the fronts are 235 & the rears are 225..not sure about the rest as my car is still in the shop & I can't physically check it out yet. Thanks for replying. Signatureleen369 http://www.automotiveforums.com > is it ok to have front tires with aspect ratio 60 and rear 55? or > they all need to be the same profile? If you're just a typical car owner, go with whatever the door sticker says. Almost all cars come with the same size on all 4 corners. The ones that don't are usually high-performance ones. That said, keep the same size tires on the same axle. After that, it's up to you - there can be performance gains by running unequal size tires front and rear, but I'd have a hard time recommending it for a normal car. Vettes have been running bigger rears since 97, and the new V8 powered Grand Prix's actually have wider fronts! (Tires, P255/45R18 front, P225/50R18, rear) Just run the same size on the same axle unless you're driving on an oval all day long. ;) > is it ok to have front tires with aspect ratio 60 and rear 55? or > they all need to be the same profile? On two wheel drive it is okay to mix front to rear. On four wheel drive, especially all-time 4W, I'd stick to same size front to rear. |
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