wheels

[chuddleston2003]

Will a tuner let you change the wheel size say from 16 to 18? My mom has a 01 convertable that she is thinking about getting rid of because it rides rough and they just don't drive it anymore. I would take it and turn it into a saleen clone but if I can't put the saleen rims on it I don't want it.

 

[GT Rob]

Lets see some pics you shouldn't have a problem with changeing rims

 

[chuddleston2003]

No I am talking about the speedometer will it change so my speed is not off if I change the tires and rims to 18.

 

[lilj4u2njoy]

It's not that serious, I don't think u will notice any changes in the speedo...

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[det_riot]

No I am talking about the speedometer will it change so my speed is not off if I change the tires and rims to 18.

1. The way you worded that question was atrocious.
2. It depends on the tire sizes of each wheel. Usually 16's have a thicker tire (sidewall) so when you put an 18" wheel and tire, they're usually only a little bit taller than the 16

 

[lilj4u2njoy]

Lol, I believe if u keep the overall same diameter then u will be fine

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[lilj4u2njoy]

1. The way you worded that question was atrocious.

+100

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[det_riot]

Lol, I believe if u keep the overall same diameter then u will be fine

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Ya as long as the overall diameter is the same, the speedo won't be off.
Take a stock size 16" wheel with a 225/55 tire. That means the sidewall is 225*55=123.75mm.
123.75mm = 12.375cm
12.375cm/2.3=5.38inches
5.38 is the sidewall so for top and bottom that's 16"+5.38+5.38=26.76"

Then take an 18 with a 245/40 tire.
245*.40=98mm=9.8cm
9.8cm/2.3=4.26inches
18"+4.26"+4.26"= 26.54"

Moral of the story, no it will not fuck up your speedo