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OEM Wheel swap

rizzo
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rizzo Member

rizzo

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Couple questions about OEM wheels.

My 04 S has 18 inch (five spoke) wheels and I am considering a set of 19 inch (ten spoke) factory wheels.

Are the 19 wheels 8 or 9 inches wide? Will there be any fittiment issues with regard to offset or width going from an 18 to a factory 19in wheel?

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rizzo Member

rizzo

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18 inch wheel = 8.0 J x 18 ET 57 tyres 255/55 R 18

19 inch wheel = 9.0 J x 19 ET 60 tyres 275/45 R 19

You can change the wheels without problem.

Awesome! Thanks for the reply.

One of the online tire suppliers shows a possible tire that could be used as the 255/50-19

If I use the 255/50-19 it will keep the exact same diameter as the stock 255/55-18

If I go with the 275/45-19 it will cause a speedometer reading 1% too fast. Anyone think this is a big deal?

Can/Should the computer be calibrated for the difference in diameter for the 275's?

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rizzo Member

rizzo

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If you get the 19" wheel option from the factory they come with 275 45 19 tires. Shouldn't be a problem.

Thanks... didn't know if the computers need to be calibrated for the VERY MINOR difference is circumference or not...

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  • 8 months later...
TopGun2000 Member

TopGun2000

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18 inch wheel = 8.0 J x 18 ET 57 tyres 255/55 R 18

19 inch wheel = 9.0 J x 19 ET 60 tyres 275/45 R 19

You can change the wheels without problem.

how about 20" factory turbo wheel specs? need to replace one due to some damage on it, and the weight difference between the factory one and replica?

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