GT R Wheels on GT S
Thanks in advance
Rear Wheels: 12Jx20 ET52 (p/n A19040123007X71)
the bolt pattern is the same but offsets are way off. The rear wheel is 25.4mm wider than the GTS wheel. So it will stick out 12.5mm more if the off sets were the same. Since the offset is 52, the wheel would stick out even more. 68-52=16.
16 + 12.5 =28.5mm more proud than stock. That’s over an inch more pooching out. That is no bueno.
12” on GTS needs offset of +62.
Rear Wheels: 12Jx20 ET52 (p/n A19040123007X71)
the bolt pattern is the same but offsets are way off. The rear wheel is 25.4mm wider than the GTS wheel. So it will stick out 12.5mm more if the off sets were the same. Since the offset is 52, the wheel would stick out even more. 68-52=16.
16 + 12.5 =28.5mm more proud than stock. That’s over an inch more pooching out. That is no bueno.
12” on GTS needs offset of +62.

Fronts aren't a problem. I'm running the same sizing. For the rears, it seems pretty aggressive. I'd love to know if you could make it work.
My prediction is that with 325's it'll rub but you might be okay if you went down to a 295 or 305.
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As much as I'd love to run 325's, I'm going with 305's in the rear.




Bish
Bish
The Signature Wheels are made in same factory as BC Forged which are also an attractive alternative . The offsets however will be spot on compared to the GTR wheel.
The Signature Wheels are made in same factory as BC Forged which are also an attractive alternative . The offsets however will be spot on compared to the GTR wheel.
Bish




Also agree that custom wheels are the way to go for best fit. Even cheap flow formed HRE's will be better than many of the cast AMG wheels available for the GT models.
vorsteiner has flow forged that fit .
BTW, have you ever priced AMG cast wheels? They cost more than some of the quality forged wheels!
Last edited by thecutter64; Jun 12, 2019 at 06:23 PM.
Also agree that custom wheels are the way to go for best fit. Even cheap flow formed HRE's will be better than many of the cast AMG wheels available for the GT models.
As for aftermarket wheels, HRE FF won't fit, Vorsteiner FF for the GTS comes in 20/21" sizes.
So the choices are stay stock, spend big bucks on custom wheels or step up to 20/21 sizes.
Regarding a custom set, BC Forged and Signature can make a nice set for a bit over $4k. The GT R wheels are less and no 5-6 week lead time. So this is the current situation.
I may just stay stock, lower it and upsize the tires. That may be enough for me.




As for aftermarket wheels, HRE FF won't fit, Vorsteiner FF for the GTS comes in 20/21" sizes.
So the choices are stay stock, spend big bucks on custom wheels or step up to 20/21 sizes.
Regarding a custom set, BC Forged and Signature can make a nice set for a bit over $4k. The GT R wheels are less and no 5-6 week lead time. So this is the current situation.
I may just stay stock, lower it and upsize the tires. That may be enough for me.
Personally I would recommend this set of wheels if still available. Nice looking 3 piece set ($11k list) for $3500 obo. with a drop these will look great on the ED1...
https://mbworld.org/forums/market/741401




I had a front 19” Signature 502 OEM spec wheel get slightly bent at the race track, I think when my son put two wheels off and then came back onto the course at speed; (there’s a nasty ‘divot’ in that area). I was quoted $800 shipped for a replacement wheel from Signature. Luckily though since these wheels are forged, it was able to be 100% ‘trued’ by heating it up at a local Alloy Wheel Repair shop, which was what Signature told me to try first.
I had my Signature 502s made in the exact same size as the OEM wheels, primarily because I use the ‘option’ tyres, (MPSC2 ZPs) as my track tyres, and since I had a spare set from my traded C7 Z06 laying around it economically made sense. They are fantastic wheels; incredibly well made; lightweight; great looking AND so much cheaper than buying other forged custom wheels.
Bish




