Originally Posted by
DAN-Saff
I put a 3.9 on mine because I'm using 18s and it just didn't feel right it would either wheelspin or bog down when launching it and In gear it would spin up too much.
Cheers for replying Dan.
I was trying to work out if it would be a worthwhile change when rebuilding the diff.
On 205/50x15 tyres the speeds seem to come out roughly ( assuming 6500rpm in Gear ) at :-
1st 41 ( 38 )
2nd 63 ( 59 )
3rd 92 ( 85 )
4th 122 ( 114 )
5th 152 ( 142 )
At motorway speeds it looks roughly like it'd be doing 5mph less for the same revs - seem small differences on paper but was interested to hear of your real world experience
Cheers