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If tire sizes in 17 inch diameters are getting hard to find for wider profiles, does it now make sense to get 18 inch wheels vs 17 inch wheels if starting fresh? Or, does it make sense to just get slightly narrower 17 inch wheels and go with 17's?
For example go with 8.5 or 9*17 fronts and 10*17 rears, or better to go with 8.5*18 front and 10.5 or 11*18 rears? Do 18's really mess up the overall suspension/damping/rebound/steering response vs 17's or 16's?
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Emery 1988 930 coupe - Silver Metallic TurboKraft 3.3L 8:1 CR, SuperSC Cams, GT35R, B&B Headers, TK intercooler, Tial WG, ARP, tecGT based phased sequential EFI & ignition, Wevo shifter/coupler, ... ![]() |
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Thank you, I'm in the process if setting up my mutant 74 that has a wide rear but stockist front. I've always been a fan of e88s so seeing what I can make work
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E88s are exactly what I have waiting for a set i tires for my 78 930.
DIY refurb in gold
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Jesper Carrera 3.0 1975 930 1978 OEM Matte Schwartz, ANDIAL IC, BL WUR, SC cams. LMA-3 w. XD-16 and CP transducer www.stauningwhisky.dk |
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berponte
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![]() Hope this helps. After debating which offsets, sizes, shapes, colors, ect. , I went with RUF 9x17 front and 10 x17 rears, on both cars. I do have a spacer on the passenger side on both, Rim is strong and easy to clean. I do have to shorten the lug bolts on the rear, if i want to use the original bolts. The spacer is a 1/4 inch , roughly 26mm. Tire rack fo have plenty of rubber for 17s. My tire sizes are 235/40/r17 315/35/r17 Toyo 888 |
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315 for of 10 " in the back it is far too much, normally the maximum for of 10 " is 275.
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Titanium User
Join Date: Aug 2014
Location: NY
Posts: 1,776
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Yes I am running a 275 r888 on my 10in rufs. I am however running at 315 r888 on my 11in e50.
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Turbofrog
Join Date: Aug 2009
Location: Europe
Posts: 1,606
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Same here on tire sizes.
Funny how my passenger side also needs about 20mm spacer rear if driver side is spot on. There must have been a drunk welder on passenger side back in Germany.
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************************************************** ******************************* 79 930: HX40Super, MS3pro+ID1000+044+E85, Ignition: 123/TUNE/MSD6A, BB+2*turbosmart38, WMI. Weight 1110kg |
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I bought them used here on PP. researched and measures iot achieve max dish and no spacer. I don't remember, but they are about 9&11". Planning on 245&315 for tires.
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Jesper Carrera 3.0 1975 930 1978 OEM Matte Schwartz, ANDIAL IC, BL WUR, SC cams. LMA-3 w. XD-16 and CP transducer www.stauningwhisky.dk |
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Administrator
Join Date: Feb 2015
Posts: 3,292
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As far as specs for wheels (offset, etc) maybe check out our wheel tech article for some additional input: Wheel Fitment and Spacing Guide - Pelican Parts.
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Join Date: Jan 2012
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Quote:
![]() It was maybe also a question of conformity with regard to the diameter of the back wheel and the calibration of the speedometer. |
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Join Date: Jan 2012
Posts: 1,175
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Quote:
wider the rim within reason gives a tire quicker response. the reason why many manufacturers dont recommend wider rims on narrower tires today is for warranty and passing the "Car Wash" test in which the rims get easily damage once folks replace oem rim protector type tires with something else. |
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