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The wheel arches on the JCW have a little lip that pokes out maybe ~5mm wider with that little lip then the stock ones. Buy one and test it and see where you are at. The 11mm spacer on the F56 pushes it out more.
Stock wheels are 7" wide with 54mm offset. since you are going to a 45mm offset, you are already pushing the centerline of the rim out 9mm. you are then widening by an inch and a half. by my calcs, you will be 10mm closer to the strut ( as you have found there is not 10 mm there) and 28mm more poke. adding a 10mm spacer to bring you to factory clearance to the strut, you will have 38mm of poke.
On my car, I am lowered and running 18X8 +35 offset with no spacers. 225/40-18 tires and I was rubbing on the JCW fenders. my setup gives me more clearance to strut ( from rim, took some of this up with tires) and a 31mm poke and the tire comes out from under the JCW fender a little bit.
I would say that at factory height, you will not rub much but you will have a massive poke that JCW fenders will not fix. once lowered, you will destroy your tires and fenders, and still have massive amounts of tire sticking out beyond the fender. to fix this, you can run an unsafe amount of tire stretch, or an unsafe amount of front negative camber (maybe, but will probably still hit strut). My personal recommendation would be to return the wheels to whoever sold them to you and told you they will fit because they lied to you. then find a better vendor and get ones that are 8" wide.
Last edited by RLM; Apr 1, 2019 at 01:20 PM.
Reason: add picture
That said, I dont think they lied to you unless they vouched they wouldn't hit aftermarket coilovers...on stock suspension probably would fit just fine. I too, on a past car, got that gnarly surprise of new coilovers hitting the backside of wheel once. I wasn't attempting to fit aggressive wheels at the time however so it wasn't as dire.
That said, I dont think they lied to you unless they vouched they wouldn't hit aftermarket coilovers...on stock suspension probably would fit just fine. I too, on a past car, got that gnarly surprise of new coilovers hitting the backside of wheel once. I wasn't attempting to fit aggressive wheels at the time however so it wasn't as dire.
Maybe that is what it is, i tried to do research about stock fitment and when i had confirmed numbers, i was told the wheels are stock 42 offset not 54....
I believe pretty much all OEM alloys for F56 are +54 offset.
As for the rims fitting, I think you'd have clearance issues even with stock shocks based on the measurements and how close to the shocks the stock wheels sit. Coilovers would likely make this worse.
That said, I dont think they lied to you unless they vouched they wouldn't hit aftermarket coilovers...on stock suspension probably would fit just fine. I too, on a past car, got that gnarly surprise of new coilovers hitting the backside of wheel once. I wasn't attempting to fit aggressive wheels at the time however so it wasn't as dire.
just got through using that link you sent and looks like if installed right, i sit flush with oem specs on hub to shaft difference but i raise my height and push out, i think the issue is how wide it is after all. 8.5 is no bueno
