Z4 Coupe Suspension geometry

M

malibudave

Member
I took my car in for a full alignment check the other day. The geos where completely off (probably why the inside of the front right tyre were wearing!) and were corrected by the garage. However later on whilst looking at the results I noticed that the garage had set the geos on mine for a Z4m. I'm guessing a 3.0si and an M have different suspension so will this work on my car?
 
Can anyone help with the toe/camber settings that I should have front and rear on my car? That way I can compare what I now have on my print out and go back to the garage!
 
malibudave said:
Also just read on another thread that to set up a Z4 the garage needs to put 65kg in each seat, is that for real? :o
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Don't know if that amount is correct but I know they do definitely put ballast on the seats yes. :thumbsup:
 
malibudave said:
Also just read on another thread that to set up a Z4 the garage needs to put 65kg in each seat, is that for real? :o
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Can't speak for the coupe or ///M, but to correctly set up the geo on a roadster each seat has to have 65kg of ballast in it, the tank must be full of fuel and another 20kg placed in the boot. If you don't do this the settings will be way out.

All that info is in the BMW TIS.

All Hunter equiped shops do this and it's also one of the reasons that no tyre fitters or normal centres can touch a Z4 and if they do it will be worse than useless
 
I think I might be out on the boot loading. It may be 15kg, but would have to check the TIS.

So was it a local garage that just set the toe-in?
 
It was ABP motorsport nr Crewe. Tbh I really trust them, so I have always taken my cars there. They did a full laser alignment check on it and reckoned that both camber and toe on the front and camber on the rear were miles out but also different from side to side. At least now if they are wrong, they are wrong to the same degree each side if you see what I mean!!
 
malibudave said:
It was ABP motorsport nr Crewe. Tbh I really trust them, so I have always taken my cars there. They did a full laser alignment check on it and reckoned that both camber and toe on the front and camber on the rear were miles out but also different from side to side. At least now if they are wrong, they are wrong to the same degree each side if you see what I mean!!
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That may be so, however I took my Zed to Guglielmi Motorsport in Northants on a strong recommendation. One of the best Lotus set up places and former BMW specialist. Made a complete arse of the set-up that stripped the inside edge of my tyres off. Was only corrected once I had it set up on a Hunter machine. Correctly ballasted, etc.
 
All 3.0 and 3.0Si models all have the same suspension setup, so shouldn't the setup be all the same? :?
 
Sorry should have been more clear... was referring to CJ's comment: "Can't speak for the coupe"

I thought OP could reference the geo setup from anyone who has the sport suspension and not just someone with a coupe.
 
Ah, OK. But I'm pretty certain their is still a subtle difference in the geo between the roadster and coupe even with the exact same suspension components due to the rigidity differences of the chassis.
 
Peddy - that's why I said I could not speak for the coupe as it may, or may not, need different ballast, fuel load and any one of the dozens of settings could be different. Such innacurate information would be worse than no information.

If anyone want to give me a coupe chassis number I'll gladly pull the TIS spec for that car and post it, although i'm sure I could just generate a year and model to suit.
 
bump for update as i'm also interested... searched everywhere but can't find alignment specs on a coupe 3.0si
 
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