M series offset / et ?
Discussion
I am not a wheel expert but my car is fitted with 15x6 ET7 Minilites.
Fitted by the previous owner but I am told these are 'standard' spec. for M's.
However with more than 0.5 deg neg camber, on full lock the rim touches the upper wishbone. (the edge near the camber adjuster)
Options are to grind the wishbone edges or fit 3-5mm spacers or both.
Spacers bring their own problems, in my case, too few threads in the wheel nut - so longer wheel studs anybody.
If I was buying new wheels I would look for zero off/inset.
David
Fitted by the previous owner but I am told these are 'standard' spec. for M's.
However with more than 0.5 deg neg camber, on full lock the rim touches the upper wishbone. (the edge near the camber adjuster)
Options are to grind the wishbone edges or fit 3-5mm spacers or both.
Spacers bring their own problems, in my case, too few threads in the wheel nut - so longer wheel studs anybody.
If I was buying new wheels I would look for zero off/inset.
David
I think that, at least for Vixens, the wheels recommended by several people on this forum, are 5.5J 15s. I don't know whether this is the same for the M Series. It sounds like these should have slightly more clearence.
I suspect others, with a more definitive answer, will be along soon.
I am torn between Minilites and Wires for my S1
I suspect others, with a more definitive answer, will be along soon.

I am torn between Minilites and Wires for my S1
Ms as standard were 6J x 14, most people with 15" wheels ran 7Jx15 with 205/60s or 205/55s(I had a 19mm spacer on the front with long bolts). On the rear you can go wider, I ran 9Jx15, but you need to be careful with tyres to keep the shoulder in the wheel arch, though you can rub back the fibreglass on the inner lip to give more clearance. The 3000S has more clearance then an M/Taimar
I've rtied to find my notes on this but couldn't. IIRC standard offset is 2mm all round. This is fine for the standard whleel and for a 6.5" rim. A 7" rim will require a -3mm offset to avoid touching the wishbones at the front. Any more than 7" and you'll need to check the individual car carefully. Due to the lack of availability of wheels with about zero offset most people have them made by Compomotive or Image and go for 16"x7" and fit 205/55/16 tyres which are cheap with a very good selection to choose from.
DavidY said:
Ms as standard were 6J x 14, most people with 15" wheels ran 7Jx15 with 205/60s or 205/55s(I had a 19mm spacer on the front with long bolts). On the rear you can go wider, I ran 9Jx15, but you need to be careful with tyres to keep the shoulder in the wheel arch, though you can rub back the fibreglass on the inner lip to give more clearance. The 3000S has more clearance then an M/Taimar
David, didn't knew about that bigger clearance on the 3000s (which is my car). Mine is fitted with the standard 6x14 T slots with 185x70x14 Good Years, what size would you recommend for new tyres? Would it be stupid to fit larger/lower profile tyres?thanks,
Christian
Anyone know what offet the 7Jx15 have to be to clear the standard front arches (or do they have to be modded a tad). Eric Stahler is trying to work this out for his 3000M Race project. i.e. can he get 7j's under there as they are better platform for the 205x15x60 yoko's.
205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
jellison said:
Anyone know what offet the 7Jx15 have to be to clear the standard front arches (or do they have to be modded a tad). Eric Stahler is trying to work this out for his 3000M Race project. i.e. can he get 7j's under there as they are better platform for the 205x15x60 yoko's.
205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
About -3ET +/-2mm205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
( Have you seen this thread? http://www.pistonheads.com/gassing/topic.asp?h=0&a... )
JR said:
jellison said:
Anyone know what offet the 7Jx15 have to be to clear the standard front arches (or do they have to be modded a tad). Eric Stahler is trying to work this out for his 3000M Race project. i.e. can he get 7j's under there as they are better platform for the 205x15x60 yoko's.
205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
About -3ET +/-2mm205's are fine on a 6J (raced these for many years no probs but as above that tyre is best on a 7j), best tyre for a 6 is a 195 for the road, but racing 205.
( Have you seen this thread? http://www.pistonheads.com/gassing/topic.asp?h=0&a... )
Try this old thread. I posted just after I had measured the offset on my T-slots
http://www.pistonheads.com/gassing/topic.asp?t=156...
http://www.pistonheads.com/gassing/topic.asp?t=156...
Was the smallest width tyre I could get on the rim. Yes it was a bit proud of the wheel arch (never caused an issue with an MSA scuiteneer though), overtyred yes for the road but not for trackdays plus hillclimbing/sprinting.
My car was burgendy yours was brown I believe, both quite nasty 70's colours!
My car was burgendy yours was brown I believe, both quite nasty 70's colours!
DavidY said:
Was the smallest width tyre I could get on the rim. Yes it was a bit proud of the wheel arch (never caused an issue with an MSA scuiteneer though), overtyred yes for the road but not for trackdays plus hillclimbing/sprinting.
My car was burgendy yours was brown I believe, both quite nasty 70's colours!
That looks Chocolate Brown! Must be the light! (Look the same as mine My car was burgendy yours was brown I believe, both quite nasty 70's colours!

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