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255 35 18's on my SVX
In our quest to get enough traction on our test car for ECUtune SVX Stage II, my svx, we got the 255 35 18's installed today. They fit awesome. I can say without a doubt that this is the best wheel and tire size combo for the svx. You can only fit this wide of a tire on this size wheel (8 inch wide +49 offset)so it's an expensive combo but what can I say--it's the way to go. They completely fill the wheel well while not being in any danger of rubbing, none of that negative camber stuff to try to make them fit where they don't. It's raining out and getting dark so I couldn't take many pictures but I snapped a couple off real quick.
I stuck with the pirelli pzero nero m+s because I like them so much on the street. It's definitely not the best tire for the track for the same reason I like them so much on the street. It's the best rain tire I've ever driven on. The huge raingrooves mean that there's a lot less tread and a lot more groove than most tires. Still we've stepped up the width of the tread by an inch and a half with these tires. Multiply that inch and a half by 4 and you have a lot more tread on the ground so it will definitely be a lot better even if we don't get rock solid instant traction with the big shot of nitrous oxide. |
#2
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Thats awsome, so we can go to a 255 with an 8inch wheel and a 49 offset? Good to know, now lets see thoes time slips
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#3
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#4
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Okay, now who's going to do the math - does this mean that 255/35-16 with 50mm offset will fit without rubbing?
-Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#5
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I need to sell my temporary transport to afford the NOS kit I wouldn't expect any stage II slips from me untill next summer Plus I have to do something about my tranny issue,
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#6
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I thought I just posted here...where did it go?
I'll post again. Good luck with the new found traction. Do you have a photo showing the width of the new tires? I'd like to see what the back of the car looks like.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#7
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Ah HA!!! It was a different thread...sneaky guy!
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#8
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[QUOTE]Originally posted by Earthworm
Ah HA!!! It was a different thread...sneaky guy! [/QUOTE your quick
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#9
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That's not what my gf tells me.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#10
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With a whole bunch of calculation we can glean together some useful information about what will fit though, just but seeing what won't fit on the outside. I'll do the math though and let you see what I mean. The width of the wheel is critical. Factory wheels are 7.5" wide with a +55mm offset. That means the wheel goes back 150mm from the mounting surface and sticks out 40 mm from the mounting surface. My wheels are 8" wide with a +49mm offset. That means the wheel goes back 150.6mm from the mounting surface and sticks out 52.6mm from the mounting surface. So bascially the wheel sticks inwards the same amount as factory while sticking outward half an inch more. So in this case 74% of the wheel and thus the tire goes to the inside of the mounting surface. In the case of the factory wheel 79% of the wheel and thus the tire goes to the inside of the mounting surface. So you're putting more rubber to the inside. What can you fit without rubbing on a factory wheel? I don't know. On the smaller diameter wheel you are going to have tire in an area that is tighter to the strut and the shape of the sidewalls will be a lot more bowed on the less wide wheel. The real problem is in the case of aftermarket wheel. Most aftermarket wheels aren't available in an offset any larger than +42mm. This puts more wheel to the outside. An 8 inch wide wheel +42mm offset would stick out a whole 59.4mm from the mounting surface and a 7.5 inch +42 wheel will stick out 53.7mm from the mounting surface. In the case of the 7.5 inch wheel you're putting 28% of the tire to the outside in the case of the 8" wheel you are putting 29% of the tire to the outside. So now you could take those percentages...factory 21% outside, 8" +49 26% outside, 7.5 +42 28% outside, 8" +42 29% outside and multiply by the crosssection width of the tire. If we take my tires at 10.2 inches we see that @21% 2.14", 26% 2.65", 28% 2.856", 29% 2.95" of tire goes to the outside. I can tell you from looking at my car that the 28% and 29% instances will rub on the outside. How big of a tire you can fit on stock wheels will most likely be determined by inside clearances. |
#11
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I like your girl but the visual of you is TMI
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#12
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Nice looking wheel and tire combo Michael. I'm sure your traction will be improved greatly and it'll be cool to see what times you put down next week at the track!
-Chike
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"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
#13
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So what are your wheels, where did you get them, and how much did you pay?
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#14
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Hijack! Sorry How hard would it be to make a graph showing wheel/tire sizes=y and offset=x with svx compatibility highlited? Anybody have some spare time and good knowledge of tires? Btw nice setup, what's not the cheapest setup?
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"The things you own end up owning you. It's only after you lose everything that you're free to do anything." 92 Pearl White Ls-l (138k) Euro Headlights & Blinkers, 97 Grill, Euro Tail Lights, SS Brake Lines, Stebro Exhaust, Slotted Rotors, Classic Registration 96 Legacy Outback (206k) 5-speed 2.2 Lightweight Crank Pulley, Group N Trans & Motor Mounts SOLD Wanted: Steering Wheel |
#15
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I don't know if that would work. What doesn't rub on one SVX may rub on another.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
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