Corolla Tire Size/Speedometer

[pdq]

According to Corolland (http://www.corolland.com/specs.html), the stock LE model comes with 185/65R14 tires, while the CE/VE come with 175/65R14.

If I run the speedometer calculator at http://www.miata.net/garage/tirecalc.html, the 185 is 2.2% faster than 175 (or 1.2MPH at 60MPH).

Do the different models have a compensation for the tire size within the speedometer or ECU, or are the speeds different between the two models?

[WyRolla]

The manual on my 2000 CE lists both sizes, and the Goodyear store lists both as well. I wondered about this too, but I bought the bigger ones. Figured it would improve ride quality just a little.

[Bennie]

I've had both sizes. According to my GPS with the smaller size the speedo read a little high and with the larger size it read a little low. It was all so close though that I wouldn't worry about it. I've heard it's the same calibration no matter which tire size.

[xentris02]

no. 5 mph difference or less is not a big issue with companys so they dont bother spending the little extra. i know my speedometer is like 3 to 5 mph off idk if that has to do with tires or age or what as i just bought the car. i do know that they are stock size tires though. my ranger is the same way but i have the optional size tires on there.

[Buurin]

I wrote in the FAQ here "just go 185/65/14" for everyone. I rest my case.

[fishexpo101]

No compensation in the ECM - both tires would work just fine. The speed error is well within factory specs, speedometer tolerances - so nothing to work too much there.

Keeping in the 14" wheel size - I'd run a 175/65-14, 185/65-14 or 195/60-14 depending on the tires I got to choose from.

For most cases, I'd tend to prefer running a slightly wider tread and lower aspect ratio = wider contact patch, shorter patch to enhance handling and cornering / braking and acceleration. For winter tires - I'd tend to prefer running a slighter thinner tread and taller aspect ratio = narrower/longer contact patch to chew down to through the snow/ice.

[scys]

I just bought my corolla and it came with 175/65 14's and I also have a GPS and changed my tires to 185/65 14's and it is very close to being right and I would definitly agree to go with 185's or even plus that size one more. At 100km/hr the 175's were about 3-4km/hr less then GPS and the 185 are about 1km/hr less.
Cy

[TRD-Corolla-TypeS]

No wonder my front tires rub! They're 205/70R14 My rear tires are 185/75/R14