18' wheels to 19' PP Wheels

[15GTBEN]

If I upgrade my 18' wheels/tires to 19' PP wheels/tires, will it throw off my speedo(due to the different tire heights) or will it be negligible?

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[Hurricane]

Wheel size is irrelevant. Tire size is what's important with regards to your speedometer. Use a website like tirerack.com to find out the overall diameter of the tires you have and the tires you want. FYI, the OEM 18x8 wheels come with 235/50 Pirelli P-Zero Nero tires that are 27.2" in diameter and spin 765 revolutions per mile.

Also, I hate to be "that guy" but 18' is eighteen feet. 18" is eighteen inches. ;)

Hope this helps!

 

[15GTBEN]

Wheel size is irrelevant. Tire size is what's important with regards to your speedometer. Use a website like tirerack.com to find out the overall diameter of the tires you have and the tires you want. FYI, the OEM 18x8 wheels come with 235/50 Pirelli P-Zero Nero tires that are 27.2" in diameter and spin 765 revolutions per mile.

Also, I hate to be "that guy" but 18' is eighteen feet. 18" is eighteen inches. ;)

Hope this helps!

I think people reading this will know I'm not talking about 18 feet... but thank you for educating me

I don't have access to tire rack from work (blocked web site). If my 18" tires are 27.2, how many inches are the PP 19" tires?

Anyone who has done this upgrade, did you have to do anything regarding the speedo calibration?

Flashing my ecu will NOT be an option for me.

 

[carcinoid]

I think people reading this will know I'm not talking about 18 feet... but thank you for educating me .

You sure? I live in Chicago and I'm pretty sure I've seen some ridiculous three-blade rims that come close.

 

[Chameleon]

[MENTION=12922]15GTBEN[/MENTION] I did just that, went from the crappy 18's to PP 19's. 275/40 all around, no issues with speedometer.

 

[15GTBEN]

@15GTBEN I did just that, went from the crappy 18's to PP 19's. 275/40 all around, no issues with speedometer.

Awesome thanks, man!

 

[Evil Minion]

See attached. Tire 1 is the 235/50R18's and 2 is the rear 275/40R19's off the PP.

Basically a negligible difference

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