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Discussion Starter · #1 ·
I know that this is not the Tire and Wheel section, I have posted there too, but this section gets more views. And the law of averages states that I have a better chance of my question getting answered here. If a Moderator needs to move this post I understand.

Got a good opportunity to purchase a set of 255/35R19's at a good price and don't want to see them walk away. Any one running these?????

They would go on a set of Konig Oversteers 19x8.5 42mm offset, mounted on a 2014 with H&R sport springs. Just dont know enough about tires and wheels to know if they would rub or not.

Help a Brother out ..............................
 

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Discussion Starter · #2 ·
I guess no one is running this size.
 

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The tires would be .62 inches taller than OE. Keep in mind that is overall height so add half of that to each side. Then they would be .79 inches wider, again half of that to each side.

The wheels would be 7mm(.27 inches) further from the suspension but 19mm(.74 inches) out more towards the fender.

I can't say whether they will fit or not because I don't know how much the spring lower the car. But just do some basic measurements off the stock stuff and you'll be able to tell.
 

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What tires? Just know that not all 255's are really 255. If they're a typical street tire like a Conti DW, 255 is 255 but some Extreme Performance and race tires are hilariously not even close. I've been around a lot of autocross guys running 255's and Enkei's and it seems to do just fine at that offset but not sure how the additional tire height will affect things with lowering springs. Most guys I know with FoST's are still in G Street class and not a lot of futzing around.
 

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Discussion Starter · #5 ·
What tires? Just know that not all 255's are really 255. If they're a typical street tire like a Conti DW, 255 is 255 but some Extreme Performance and race tires are hilariously not even close. I've been around a lot of autocross guys running 255's and Enkei's and it seems to do just fine at that offset but not sure how the additional tire height will affect things with lowering springs. Most guys I know with FoST's are still in G Street class and not a lot of futzing around.
The tires are the FireStone Fire Hawk Indy 500's
 

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Discussion Starter · #6 ·
EXISTING NEW

Diameter 645.2mm 661.1mm
Circumference 2027mm 2076.9mm
Poke 46.6mm 63mm
Inset 156.6mm 153mm
Speedo error 0% -2.41%
Reading at 30mph 30mph 29.28mph
Reading at 60mph 60mph 58.56mph
Ride height gain 0mm 7.95mm
Arch gap loss 0mm 7.95mm

Capture.PNG wheelimage (1).gif

STOCK 235/40r18 (orange) VS. 255/35r19 (green)
 

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I have a feeling that might be pushing it a bit with that offset...does the RS have the same hub and fender measurements? Thhose are 19 x 8.5 wheels with a 60+ I believe.
 

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Discussion Starter · #8 ·
The MK3 RS wheels are 19x8 +50 offset
 
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