MrPhotographer06 Posted October 27, 2015 Share Posted October 27, 2015 So, Ive searched high and low and only found one thread with answers..It seems that the s30 Rear WMS to WMS is 55"What is the front dimension? While I know I could potentially just make whatever I want since I'm tube framing, but I'm trying to make certain components work and mock up where I should be. Is the front also 55"?The track with I found was 53.5 front and 55 rear.I'm looking at front WMS to WMS measurements of 59" right now. I could shorten, but not exaclty wanting to. I think this is going to call for some ugly high positive offset wheels. ): Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 27, 2015 Share Posted October 27, 2015 What's a WMS? Quote Link to comment Share on other sites More sharing options...
1969honda Posted October 27, 2015 Share Posted October 27, 2015 (edited) wheel mounting surface. I'll see if I can get a measurement when I get home this evening if nobody responds before then. Edited October 27, 2015 by 1969honda Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 27, 2015 Share Posted October 27, 2015 Nissan called out a "tread" width, with certain tires. Might be a useful number. Your track width differences don't seem to match though. Only a 0.3" difference. You have 1.5". Typo? Quote Link to comment Share on other sites More sharing options...
MrPhotographer06 Posted October 27, 2015 Author Share Posted October 27, 2015 wheel mounting surface. I'll see if I can get a measurement when I get home this evening if nobody responds before then. thanks! Typo.. meant 53.5 and 53... but i see its .3. I'd like WMS to WMS since thats the dimensions I have off the new suspension. Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 27, 2015 Share Posted October 27, 2015 (edited) Pretty sure you can logic-out that tread width = what you're looking for. Two tires, different widths = zero offset. Zero offset means tread width = WMS-to-WMS. Measured from tread center. Zero offset. It's the only way to make the facts coherent. Note the note about "at curb weight". Tread width changes. Edit - changed same to different. Edited October 27, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
TimZ Posted October 27, 2015 Share Posted October 27, 2015 Pretty sure you can logic-out that tread width = what you're looking for. Two tires, different widths = zero offset. Zero offset means tread width = WMS-to-WMS. Measured from tread center. Zero offset. It's the only way to make the facts coherent. The 280Z wheels were not zero offset - they had a 15mm (0.59") offset which I'm assuming was positive. So I'm pretty sure that this means you would have to add two times the offset to the the tread width to get the WMS-to-WMS dimension, assuming that tread width is measured to the center of the treads. Note the note about "at curb weight". Tread width changes. WMS-to-WMS will change too. Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 27, 2015 Share Posted October 27, 2015 (edited) Dang. I guess the charts are inconclusive then. If a 195 and 175 width tread give the same tread, I assumed zero offset. Otherwise, the extra 20 mm would be a + or a - to tread. Unless by "tread", Nissan means WMS to WMS. Maybe a translation problem. I don't know why they'd spec. tread based on tire, and show one tread, but two tire sizes. Or maybe "tread" generally means WMS to WMS in car suspension world. Better than a crossword puzzle.. Edited October 27, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
MrPhotographer06 Posted October 27, 2015 Author Share Posted October 27, 2015 I was under the impression that tread and track were the same thing. Track is middle of contact patch to middle of contact patch. Assuming that its nearly the entire tire width, no mater the width, the middle is the middle. Thats how I read it anyway. If i still had stock suspension, i'd measure it lol Quote Link to comment Share on other sites More sharing options...
TimZ Posted October 28, 2015 Share Posted October 28, 2015 Dang. I guess the charts are inconclusive then. If a 195 and 175 width tread give the same tread, I assumed zero offset. Otherwise, the extra 20 mm would be a + or a - to tread. Unless by "tread", Nissan means WMS to WMS. Maybe a translation problem. I don't know why they'd spec. tread based on tire, and show one tread, but two tire sizes. Or maybe "tread" generally means WMS to WMS in car suspension world. Better than a crossword puzzle.. No - it should still work, as offset is measured from the tread centerline to the WMS, a wider tire wouldn't have an effect. Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 28, 2015 Share Posted October 28, 2015 (edited) You're right. Got lost on the edges. So if he knows stock wheel offset, he knows what he wants to know, from the table of dimensions. Factory numbers, not worn-out car measurements. Edited October 28, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
TimZ Posted October 28, 2015 Share Posted October 28, 2015 (edited) You're right. Got lost on the edges. So if he knows stock wheel offset, he knows what he wants to know, from the table of dimensions. Factory numbers, not worn-out car measurements. Yes, I believe so. As you already noted, the "at curb weight" part is still important, as the wheel ends move in an arc with suspension travel. Edited October 28, 2015 by TimZ Quote Link to comment Share on other sites More sharing options...
MrPhotographer06 Posted October 28, 2015 Author Share Posted October 28, 2015 (edited) Awesome. so in theory..54.25" WMS to WMS Front53.95 WMS to WMS Rear.My new front suspension is 59" WMS to WMS giving me 2.375" wider track on both sides. With zero offset wheels I'd be sitting 3.375" wider than stock.. so a decent positive offset, camber and my MSA flares should get me close. Probably shouldve bought wide flares lolP.S. I see this info is 280z, i'm assuming 71 240 is the same.. Edited October 28, 2015 by MrPhotographer06 Quote Link to comment Share on other sites More sharing options...
TimZ Posted October 28, 2015 Share Posted October 28, 2015 P.S. I see this info is 280z, i'm assuming 71 240 is the same.. I would not have assumed that, as I thought at a minimum the wheel offsets were different. However a quick check with a 240Z service manual (found here) confirms that they were in fact the same. Quote Link to comment Share on other sites More sharing options...
1969honda Posted October 28, 2015 Share Posted October 28, 2015 Glad you got this all figured out; I just got home from work and running a few errands so it is after dark and the car is outside at the moment. Quote Link to comment Share on other sites More sharing options...
MrPhotographer06 Posted October 29, 2015 Author Share Posted October 29, 2015 No worries brother! Now I just need center to center, front to rear wheel lol Quote Link to comment Share on other sites More sharing options...
TimZ Posted October 29, 2015 Share Posted October 29, 2015 No worries brother! Now I just need center to center, front to rear wheel lol Look in the service manuals that I linked. Quote Link to comment Share on other sites More sharing options...
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