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235/45-R18

soundmike

Passed Driver's Ed
Location
US
As replacement for an OEM setup? Physically they will fit, but the size is wrong. You're looking at roughly a 5% speedo error, which will throw off ABS and such. 3% at 60mph is generally an accepted margin of error.
 

Al_in_Philly

Autocross Newbie
Location
Philadelphia USA
While I'm not sure if you're trying to replace 225/40/18's or 235/35/19's, here's an easy calculator to check the overall diameter of your current tire/wheel and the 235/45/18's: https://tiresize.com/calculator/. However, you'll also need to make sure that the wheel width is appropriate for the tires you're planning on; for that, I suggest looking up the tires on www.Tirerack.com as they list pretty much the full specs for each tire they sell.
 

Beaker1

Go Kart Champion
Location
Baltimore MD
Im running 235 40 18. Same as the 235 35 19 stock tires
 

PabloX

New member
Location
New England
As replacement for an OEM setup? Physically they will fit, but the size is wrong. You're looking at roughly a 5% speedo error, which will throw off ABS and such. 3% at 60mph is generally an accepted margin of error.

It shouldn't throw off ABS at all. ABS sees differences in wheel speed. If all 4 tires are the same diameter, it won't care what the actual diameter is.
 

38wadcutter

New member
Location
new jersey
They work great!

I'm using that size Michelin's on my 2015 R and couldn't be happier as I changed to an 18x8 wheel as soon as I got the R-19's had no sidewall to speak of and the ride was harsh with little margin for potholes and such.
 

Elepik9

New member
Location
North jersey.
I'm using that size Michelin's on my 2015 R and couldn't be happier as I changed to an 18x8 wheel as soon as I got the R-19's had no sidewall to speak of and the ride was harsh with little margin for potholes and such.


Thanks. I shove the stock 18's and wanted a little more side wall.
I'll be picking up this size.
 

2013R

Drag Race Newbie
old post.. but I am also getting that weird tire size today. on secret wheels which will be announced on my channel. I hope to find a good setting of impulse multiplier in vagcom to make my speedo a bit closer.. but if not, aw well..
 

2013R

Drag Race Newbie
and that size does not make your speedo "5% off".... more like less than 2%.

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