Would this wheel and tire combo cause any issues?

[‘19 GeeTee]

As far as throwing codes? 285/35/19 & 285/35/20. The would be an exact 1" difference in diameter from front to rear.

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[Nickel]

As far as throwing codes? 285/35/19 & 285/35/20. The would be an exact 1" difference in diameter from front to rear.

It's not going to "throw codes" but we don't even know what size wheel you are using?

 

[Nickel]

What's the width and offset of the aftermarket wheels, what are the tire sizes that you're moving from?

 

[‘19 GeeTee]

Currently have 19 x 10 square 285/35. Was thinking about going 20 x 10 in the rear with 285/35. I know it will fit, just wondering about the computer aspect(speedo).

 

[Nickel]

Currently have 19 x 10 square 285/35. Was thinking about going 20 x 10 in the rear with 285/35. I know it will fit, just wondering about the computer aspect(speedo).

- Doesn't quite answer my question. Need to know what tires came on the car, but assuming it's a base GT and comes with 235s, then your speedo will read about 2 mph slower than what it actually is.

 

[ugstang17]

Speedo will be off if the tire height does not match factory. A 285.35 will be 28" inches tall and you will be going faster than what the speedo indicates.

A search on the internet for a tire calculator would answer all your questions. Put some effort forth. Here is a link to get you started.

https://www.discounttiredirect.com/learn/tire-size-calculator

 

[Bikeman315]

Currently have 19 x 10 square 285/35. Was thinking about going 20 x 10 in the rear with 285/35. I know it will fit, just wondering about the computer aspect(speedo).

Silly question. If you going for 20's in the back why not go with a larger tire, 305/315? Your not going to be able to rotate front to back anyway.

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