Upgrading wheels going to cause any issues? - Toyota Nation Forum : Toyota Car and Truck Forums

02whiteLE · 05-22-2006, 10:04 AM

I'm looking at upgrading the tires and wheels on my Camry. Currently, it's on stock 15" wheels and tires. I'm getting a set of 2005 SE wheels, so I'll be going from 15" to 17". Is this going to cause any issues with my car, whether through speedometer errors, or otherwise?

02whiteLE · 05-23-2006, 08:28 AM

Edmo83 · 05-23-2006, 08:39 AM

check out http://www.miata.net/garage/tirecalc.html
that will help with your spedometer calcs
also, i switched to 17 for a while....and if you live in an area with a lot of potholes...like nyc...boston....new england weather etc... i think itd be wise to keep a tall sidewall

If you have no potholes...get the bigger rims, dont forget it can change your odometer ratings, ride comfort, gas mileage but slighty. i felt the 17's were kinda comfortable on my gen4

g/l on yur project, and post pics in the wheel offset sticky when you are done...i kno i would when i put the 17's on permanently

GrayGen4 · 05-23-2006, 09:36 AM

Definitely agree with the pothole comment. I went with 16" alloys when I replaced my steelies. I figured that would prevent screwing up a brand new wheel, since most of my driving is on back roads that are poorly maintained. Had 205/60/16 tires put on with them, just for reference. I think the 17" rims advised a 215/55/17 tire, but not sure.

felonyr301 · 05-23-2006, 01:11 PM

which is the sidewall number the three digit one or the two digit one like 205 is sidewall or 65 is sidewall ?

thapranksta · 05-23-2006, 01:34 PM

So alloy wheels are less prone to problems with potholes, correct? I'm still trying to decide on whether I should get some OEM wheels (not necessarily Toyota) or get aftermarket wheels made with a different material (definitely not chrome).

edit: How much of a bumpier ride will you get with 17s or 18s''?

GrayGen4 · 05-23-2006, 02:27 PM

Quote:

Originally Posted by felonyr301

which is the sidewall number the three digit one or the two digit one like 205 is sidewall or 65 is sidewall ?

From TireRack:
"Example Size: 185/60R14 85H or 185/60HR14

The first number is the width of the tire in millimeters, measured from sidewall to sidewall. To convert to inches, divide by 25.4 In the example above, the width is 185mm or 7.28".

The second number is the aspect ratio. This is a ratio of sidewall height to width. In the example above, the tire is 7.28" wide, multiply that by the aspect ratio to find the height of one sidewall. In this case, 185x0.60=111mm or 7.28"x0.60=4.36".

The last number is the diameter of the wheel (rim) in inches."

Basically the second number is the sidewall. It is a percentage of the width (EX: 185 * .60 = 111mm).

marc780 · 05-23-2006, 02:33 PM

It might affect your ABS too. I dont know if this applies to what you are planning to do. But i knew a guy who changed his rear axle ratio, on his Dodge truck. And it messed up his ABS and his speedo. And because the ABS was messed up he totalled another car on the freeway and now he is paying garnish from his paycheck to pay for it because the ins wouldnt cover it (because he modified his truck).

02whiteLE · 05-23-2006, 07:42 PM

Yeah, but I'm not sure that this would be considered modifying my car. I'm just taking my stock gen 5 Camry, and putting a set of stock gen 5 wheels on it. They're still going to be OEM Toyota Camry wheels.

thapranksta · 05-23-2006, 08:53 PM

Can the dealer calibrate your speedometer and odometer somehow if you get bigger rims? Does the odometer use the speedometer to get its miles?

02whiteLE · 05-24-2006, 07:14 AM

I believe it uses the speedo cable to calculate mileage, but if I'm wrong, it would not be the first time I've pulled some random thought out of the air.
My thinking is that if I use the recommended tire size that Toyota recommends, that my total wheel/tire diameter should be the same, and there would be no difference between the two. Toyota is not going to calibrate the speedometers and odometers differently for every possible Camry wheel size, right?

thapranksta · 05-24-2006, 10:43 AM

That sounds logical. Even though Toyota builds good cars, they try to cheap out as much as they can with design and labor. That's why all the Gen 5s have fog cables even if they didn't come with fog lights. The SE should have the same calibration for its speedometer as the LE and XLE.

Maybe someone can verify though?