240Z Turbo Posted September 10, 2001 Share Posted September 10, 2001 I found some 17x7.5" rims I would like to purchase for the front of my car, but are of the 5-lug variety. I have no problem using the 300zxt 5lug stuff. I am wondering if I do not have coilovers what is the correct offset for this rim and will it fit? Quote Link to comment Share on other sites More sharing options...
jeromio Posted September 10, 2001 Share Posted September 10, 2001 Hard to say. BLKMGK has the 300ZX 5 lug conversion with 35mm offset 17X8 wheels. Since the ones you're talking about are 1/2 inch narrower, you could theoretically go to a 45mm offset and potentially clear the larger, stock spring perch. Coilovers definately make all of this stuff much easier Quote Link to comment Share on other sites More sharing options...
Guest scca Posted September 10, 2001 Share Posted September 10, 2001 i believe the tire is too TALL to clear the stock perch. i originally tried to do the 5 lug on my car with 7.5" rims and no coilovers and the tire hit on my rim offsets. is there anyone with 17" wheels and no coilovers.. maybe someone who just bought the adapters? Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted September 10, 2001 Author Share Posted September 10, 2001 Thanks for the try SCCA. Wouldn't you know it. I sold your 5lug stuff and now that I have more money I need it again! I guess my buddy's shop may have a 17x7.5 that I could mock up and see how it fits or does not fit! Thanks, I will let everyone know the verdict of a 17x?? on the front without coilovers. BTW, BLKMGK has coilovers on his setup. Quote Link to comment Share on other sites More sharing options...
Modern Motorsports Ltd Posted September 10, 2001 Share Posted September 10, 2001 "BLKMGK has the 300ZX 5 lug conversion with 35mm offset 17X8 wheels. Since the ones you're talking about are 1/2 inch narrower, you could theoretically go to a 45mm offset and potentially clear the larger, stock spring perch." I think you have this reversed. Higher offset's (ie. 35->45) pull the wheel into your wheelwell. So if BLKMGK clears 17x8's with +35 AND coilovers. You want less offset to push your wheel out to clear the OEM spring perch. (perch being a good one inch wide). So the 1/2" narrower wheel gains you 6mm clearance per side so for ie. 19mm less offset would net you 25mm more clearance with a 17x7.5" +16mm offset. Looking at it from a different viewpoint: 16x7 0 offset clears fronts with 225s and OEM strut/spring/fender. 5 lug hubs of the more common Z31 type add ~20mm of offset so a +20 wheel would be placed in same location on which you can tickle that number to centre in the location you want. (If you have to buy before knowing exactly what will fit, choose on the higher offset number so you can at least add a spacer if need be). A +18 or +20 offset should be quite close to requiring a v. small or no spacer at all depending on if you use slip on rotors and OEM perches or coilovers etc for stock location. As coilovers gain you room on the inside then you can run less offset to add tire/wheel on the inside when going wider. I don't recall which strut has the greater angle, a ZX or Z strut. A 280ZX front setup fits with +12, to +18mm offset on a 16x8 wheel with 245's with coilovers on the strut. The tight point is the tire to strut clearance in this geometry. Quote Link to comment Share on other sites More sharing options...
jeromio Posted September 10, 2001 Share Posted September 10, 2001 Oops. You're right. Pesky arithmetic... Quote Link to comment Share on other sites More sharing options...
Guest scca Posted September 13, 2001 Share Posted September 13, 2001 FYI -- ZX use less camber internal in the strut than a Z. ZX are the SAME as a 510. they are interchangeable........ Z will not fit a ZX or a dime. a zx strut in a z would run like 15 degrees positive camber. Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted September 13, 2001 Share Posted September 13, 2001 Also, if I were to try and put the +20 up front instead of the +40 it would hit the wheelwell edge. I'm not sure how well a 17X8 wheel would work up front with a stock spring - go narrower IMO. Can take pics of my 240 if it will help etc. etc. Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted September 18, 2001 Share Posted September 18, 2001 Just a heads up - my driver's side REAR tire was rubbing the fender for some reason, the passenger side never rubbed. I tried rolling it a bit with limited success. As a result I've tried pulling the 1/4inch spacer from that side. To my surprise it does NOT rub! I've yet to try doing this on the other side but I may try it just to get things even. Good news that the Mustang offset wheels work with no spacer in the rear - this is WITH coilovers. Also, I may bump up the spring rate back there. This sucker squats real fast and while I've not bumped the wheelwell yet I'm worried aboout it - I've yet to try a standing launch. Current rate is 225 in back and it's not really sitting down on the wheels right now. Drives pretty nice Quote Link to comment Share on other sites More sharing options...
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