Negative camber on fronts with square setup?

H

Hysteric

Member
Hi all, I'm looking at wheel options as I dont want to track the csl's currently on the car.

I'd also like to go to 18s.

I've come across this video - the guy puts out some good content. His z4m has a square setup with 9.5j (et22) and approx 3 Deg negative camber on the front. Aside from fitting into the wheel arch he goes on about how the negative camber is actually a bonus on track. He's not sure on the Deg camber but uses 3 camber washers .. I've not used them before so don't know myself what that means.

Video below - he starts on the wheels at around 23:30.



Wanted to get some real world experience in this...

a. Anyone in a square 9.5j setup ?
B. Any experience of front negative camber?
C. Do our cars benefit from the extra rubber up front?

Cheers
 
you can just see a washer/spacer between the hub and the yellow strut it changes the camber

you need a few flat quality washers and some new longer bolts all can be had for a few pounds

find a tyre company that will fit and measure the difference a washer at a time until you have the camber you wantIMG_2656.jpegIMG_2655.jpeg
 
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When i had my z4 I maxed the front camber with the slotted top mounts but no further. A track car can take -2 or -3 front camber if you can get it, as long as the toe is straight there won't be any adverse effects.

I also did like a wider front... not as far as a 9.5 square, but I did go for a 245 front, 255 rear on the standard 8/8.5" wheels. Car handled really nicely, nice and neutral. Not sure id ever go more than 245 on the front.
 
Definitely yes. If you can get -2 it'll help with turn in and reduce understeer. -3 even more so, but you'll wear the insides of tyres when just driving normally so id reserve that for predominantly track cars.

No real downsides to more negative camber, as long as the toe is straight.
 
Did a full refresh over a winter so felt like a different car but would had done anyway but it does feel sharp to steering inputs
 
Perhaps... with a square setup front camber isn't as important as the square setup gives you a huge amount of front tyre to compensate. But... one of the reasons why bmw have staggered tyre sizes front to rear is to promote safe understeer.

Also most bmws arent really designed to accomodate very wide front tyres... I suspect a narrower front tyre will steer better on the road.

Still, as with most tyre and suspension setup choices, there isn't one correct answer, have to see what works best for you.
 
-3 may get 9.5 to fit, but it may result in fender wear depending on tire and suspension height. If you must go 9.5, et 27 is better fitment imo.
 
Run 2.5 on OEM CSLs with PS4S and 12mm spacers. Zero under steer, lovely steering feel, tyre wear just fine. Not sure why you need more tyre on the front, just go for stickier tyres if you want more grip?
 
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