Hi guys,
I'm new to the forum having recently purchased a Z3m Coupe with e39 M5 drive train transplant. I've spent the past 7 weeks working my way through the car, snagging and detailing to bring the car up to a standard that I wanted the car to be.
Next on my list is to change the rear diff or the crown wheel and pinion. It currently has a 3.15 final drive ratio which was standard fitment in the e39 but as I have no interest in doing 200mph, I would like to lower this to make the car pull even harder. I'm thinking about the 3.62 final drive ratio from the e46 M3 and wondered if anyone on here has ever rebuilt the e39 diff with this crown wheel and pinion?
I'm new to the forum having recently purchased a Z3m Coupe with e39 M5 drive train transplant. I've spent the past 7 weeks working my way through the car, snagging and detailing to bring the car up to a standard that I wanted the car to be.
Next on my list is to change the rear diff or the crown wheel and pinion. It currently has a 3.15 final drive ratio which was standard fitment in the e39 but as I have no interest in doing 200mph, I would like to lower this to make the car pull even harder. I'm thinking about the 3.62 final drive ratio from the e46 M3 and wondered if anyone on here has ever rebuilt the e39 diff with this crown wheel and pinion?
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