I'm looking at getting a new boss so i can fit a smalller wheel as the current is the mountey M range, but im unsure on what boss i require? Its the hex column which i understand is sierra, but when looking for the boss there is different options as too the car e.g 1.3,1.6 etc and the bigger engine model ones say not for 1.3, if someone could point me in the right direction please, its for a momo/omp wheel. thanks.

Just realised. Its the traditional Range wheel i have Not the M range.

[Edited on 14/11/10 by locost750mc]

I'm not an expert, but aren't Mountney M (which I think are the ones with 6 holes about 2.5" PCD?) the same fixing as lots of the others? I know that my Mountney classic wheel has the larger PCD.

... just found this which says "70mm PCD to suit Mountney M Range, Momo and Sparco steering wheels"

As for the column end, I think all Sierra columns have the same hex shaft, so any boss that fits a Sierra column should be OK.

HTH