The ultimate Z4M handling upgrade

[peteslag]

Mine is wearing these, but I don’t recommend them on a wet day :evil:

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AR1's?

I'm toying with the idea of having a separate set of track day wheels but I'm not sure if I do enough track work to warrant it. A decent set of after market wheels seem to be very pricey for the Z4M. What wheels are they, they look very Bola B1 ish.

 

[BMWZ4MC]

AR1s on TE37s.
I’ve several sets of wheels that I’ve accumulated over the years, including these, CSLs, OEM wheels and an unknown wheel that I used for track tyres before I bought forged wheels. Storage space is the biggest issue…
Track wheels mean that you can have more extreme track tyres and better all-weather tyres for road use. However, the cost of two sets of wheels and tyres easily buys PS4S or Cup 2 tyres that will serve both purposes (at least the PS4Ss).

 

[MikeyP]

i polybushed the whole car, VT race billet engine mounts, and spherical solid top mount suspension RTAB limiters..... car feels insane!

Hi Beedub. I'm thinking of replacing the RTAB's on my Z4MC and will fit RTAB limiters whilst in there. Would you mind sharing which brand and grade of Polybushes / spherical bearings you used in your suspension mods? Any comments on increased vibration or harshness? Thanks.

 

[Vanne]

it seems PS4S have a lot softer sidewalls - no fun on track. I'll be getting something else soon, just a shame I've paid so much already & the Michelins are hardly worn.

Ill take those off your hands, they will last all of 2 sessions id say :rofl: