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06-16-2017, 04:40 PM | #1 |
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What tire size for square setup?
Since our stock Diameter is 25.72 R and 25.97 F, the popular choices are 265/35-18 square.
It's the 265 is 25.3" in diameter but smaller than stock. Shorter side wall, better turn in and more torque. Has anyone tried 255/40-18? Recommend, against, or? Diameter is 26.03" which is less of a Delta than going 265. Just got a killer deal on a set to try in those sizes and they might fit better in the front width wise. It'll be my first attempt at 200 tread wear set. TIA,
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06-16-2017, 04:59 PM | #2 |
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I haven't run them but up front the taller profile could cause and issue depending upon wheel offset. 245-255-265 all fit width wise but I've encountered contact with the rear of the front bumper with a 265-40 series over the 35.....plus I like the gearing advantage even if it's small.
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06-17-2017, 12:43 AM | #3 |
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square set ... 18 x 8.5 et 35 - 15mm H&R spacer in back and 235.40.18 P-Zero tires all around
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06-17-2017, 01:10 AM | #4 | |
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06-18-2017, 08:14 PM | #5 |
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I'm running 255-35-18 on 18x9.5. +35 nonissues with my alignment setup
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06-18-2017, 09:58 PM | #6 |
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What suspension setup do you have? Camber spec?
thanks,
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06-20-2017, 04:46 PM | #7 |
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I run a 265/35/18 square setup on 9.5" 35ET wheels with a 5mm plate up front and 10mm in the rear. Springs are H&R lowering springs. Some adjustment was needed to ensure no rubbing, but now even when racing autox they don't.
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06-20-2017, 04:55 PM | #8 | |
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06-22-2017, 03:00 PM | #9 |
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Before making the swap, be prepared to max out the front camber. I run -3* up front and had it ready to go before putting on the front wheels. I use camber washers to get the extra bit up front.
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06-22-2017, 03:28 PM | #10 |
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@Jackal
Do you think I can run that with OE suspension and camber washers? I've already got the pin pulled and Max out at 2.1° in the front I think. I want to go with those tires before I do suspension upgrade and over-hual. TIA,
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06-22-2017, 03:56 PM | #11 | |
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06-22-2017, 04:01 PM | #12 | |
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06-22-2017, 04:06 PM | #13 | ||
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09-27-2017, 08:52 PM | #14 |
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I'm glad the OP was able to find the size for their setup but does anyone have actual experience with 255/40R18 as a square fitment on 9.5" rims? It irritates me if my speedo is under-reporting and while a 40 profile results in the same OD as original I'm unsure if it'll rub with a mild (~1/2") drop. Yes I realize a 35 profile may have slightly better feel and better for torque but it's also worse at handling rougher roads? and greater speedo error!
I like that the 255 tread width (for the MPSS tire) matches the 9.5" rim which is why I'd like to stick with that size. |
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10-04-2017, 06:42 PM | #15 | |
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IMO 255/40 MPSS on the stock 9" rears are stretched AF, so I can only imagine 9.5" would be worse. Why not do a square 265/35 instead?
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10-05-2017, 05:42 PM | #16 |
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Thanks, just the confirmation I needed. I ended up with 255/35 and they look great (not a fan of the stretched look either but these are just right). I tried putting on the 9.5" ET35 rims with stock suspension and it just touches the strut. A 5mm spacer should solve that problem!
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10-15-2017, 05:03 AM | #17 | |
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What tire brand/model are you running? I plan on running RE71R or Rival S, I know the actual tire sizes vary from model to model and brand to brand. How well do the stock dampers handle the H&R springs? Any pics? Thanks! Carl Last edited by Over it; 10-15-2017 at 05:13 AM.. |
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10-21-2017, 06:14 AM | #18 |
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need a square setup
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