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Rims For R33 Gtr For Street/track Use (light Track Use)

some_cs_student
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some_cs_student Veteran

some_cs_student

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+18

The clearance from stut housing to the inside of the wheel will be 6mm MORE

The outside edge of the wheel will EXTEND an extra 18mm

This is based off of a stock 17x9+30 I would go the 17x9.5+18

Yes I found that calculator later yesterday, 17x9+38 wouldn't work as it would probably touch the brakes, +18 sounds good.

Any recommendations regarding size/offset still welcome, I went 17 inch because I can get slightly more profile than an 18" :)

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Beelzebub89 Grand Master

Beelzebub89

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I thought you would want as little profile as possible on a track car. More profile = more sidewall flex. You can fit the same tyres on a 17 x 9, 17 x 9.5 and 17 x 10 so you won't have trouble finding tyres for a 17 x 10 rim. Your better off deciding what size tyres you want to run for the track and then picking rims to suit that.

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Rowdyr32 Mentor

Rowdyr32

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Yes I found that calculator later yesterday, 17x9+38 wouldn't work as it would probably touch the brakes, +18 sounds good.

Any recommendations regarding size/offset still welcome, I went 17 inch because I can get slightly more profile than an 18" :whistling:

Offset won't effect the brake clearance. The spoke and wheel design is all that will effect clearance. The centre part of the rim is still in the same location with different offsets.

Being a beginner I would recommend less sidewall flex as while learning you won't have the skills yet to drive around the flex yet of a higher sidewall profile. Turn in is a lot easier with less sidewall flex and the car woun't move around as much. Just a heads up.

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some_cs_student Veteran

some_cs_student

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I thought you would want as little profile as possible on a track car. More profile = more sidewall flex. You can fit the same tyres on a 17 x 9, 17 x 9.5 and 17 x 10 so you won't have trouble finding tyres for a 17 x 10 rim. Your better off deciding what size tyres you want to run for the track and then picking rims to suit that.

Hi,

I had a discussion with some forum members, most recommended 17x10 but I did the maths, a 255/40/17 tyre is more common in some brands of semi-slick, for example Advan A048. And the other I'd consider is 265/40/17

Either is a good fit for a 17x9.5, the 255 and sometimes 265 is listed with 10" as the upper end, so 9.5 is probably ideal for my purposes in the +18 offset.

Rowdyr32, thanks for the info, the spokes look very similar to standard but I'm not quite sure how much brake clearance they have, I think +18 is a safer offset as I get an extra 6mm in the 17x9.5.

Thanks for the tips.

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  • 6 months later...
Munroman Enthusiast

Munroman

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If you have not bought yet you are WAY better with 18" because there is an abundance of really good slicks around cheap. I sell almost new for $50 to $100 per tyre. Much faster than any semi slick.

Tyres will be the main cost and the thing that improves your lap time more than any other thing. Its a recurring cost so you really should try to go 18"

Here are a couple of useful links

http://www.1010tires.com/WheelOffsetCalculator.asp

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...=STRK:MESELX:IT

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...=STRK:MESELX:IT

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  • 7 months later...
Kaido_RR Grand Master

Kaido_RR

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Offset won't effect the brake clearance. The spoke and wheel design is all that will effect clearance. The centre part of the rim is still in the same location with different offsets.

Being a beginner I would recommend less sidewall flex as while learning you won't have the skills yet to drive around the flex yet of a higher sidewall profile. Turn in is a lot easier with less sidewall flex and the car woun't move around as much. Just a heads up.

incorrect. offset does affect brake clearance.

I couldn't get my nismo lmgt 17x9j +30 to clear my Ap however with a +15mm spacer they clear no issue

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«Cyph3r» Experienced

«Cyph3r»

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incorrect. offset does affect brake clearance.

I couldn't get my nismo lmgt 17x9j +30 to clear my Ap however with a +15mm spacer they clear no issue

Think about what you just said for a second.

Offset of the wheel does not effect brake clearance.

As old mate said it's about the face type and the spoke design along with the thickness of the centre of the wheel.

The spacer is not changing the offset of the wheel at all, only the effective offset. If you bought a 17x9j +15 Nismo LM GT in the same face as you have now, I guarantee they'd foul the brakes as well.

That is why wheel manufacturers offer different face types to clear big brakes, offset is all just to do with backspacing (coilover clearance) and guard clearance/fitment.

edit: can't spell :P

Edited by «Cyph3r»
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Beer Baron Grand Master

Beer Baron

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they both affect brake clearance. offset in different wheels is achieved diffeent ways. some change the position of the rim relative to the spoke (thus the spokes position to the caliper does not change) but some change the thickness of the hub which moves the spokes and the wheel rim and this does affect caliper clearance so it all depends on the individual wheel. both spoke desgin and offset and furthermore HOW the offset is achieved does affect caliper clearance.

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Kaido_RR Grand Master

Kaido_RR

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they both affect brake clearance. offset in different wheels is achieved diffeent ways. some change the position of the rim relative to the spoke (thus the spokes position to the caliper does not change) but some change the thickness of the hub which moves the spokes and the wheel rim and this does affect caliper clearance so it all depends on the individual wheel. both spoke desgin and offset and furthermore HOW the offset is achieved does affect caliper clearance.

+1

beer baron explain it alot better than i can. If you check the RAYS website they state which offset do not clear brakes for a given width

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