Rims For Motorsport On An R32 Gtr

[JimmyRickard]

Hey guys, as my title states, what is best size rim (and tyre) for motorsport in an R32 GTR?

Currently running 17x9's with 255's at the moment. Will 18x9's or 18x10's make the handling worse?

[Waxhead]

light weight 17s are better than 18s for motorsport

[KiwiRS4T]

I have some lightweight 17 x 8.5 rims for the track because I can use ex NZV8 series slicks which I can buy for $200 a set only half worn. See what size slicks you can get in 17in at a good price and buy rims to suit.

For my street tyres I have a set of TE37 17 x 9in - something like that would be good if you can get them at a reasonable price.

[JimmyRickard]

I actually have a set of R32 GTR rims that I use at the moment because I have a big stack of used semi's in that size. However I'm going to need to upgrade the brakes soon so I need a rim to suit at least a 330mm rotor, which is why I thought I might need to upgrade to 18's.

[KiwiRS4T]

I have 330mm D2s (same as Ksport, copy of AP) and both my 17in rims clear ok -

[djr81]

Hey guys, as my title states, what is best size rim (and tyre) for motorsport in an R32 GTR?

Currently running 17x9's with 255's at the moment. Will 18x9's or 18x10's make the handling worse?

The rim selection is alot about brake & tyre selection.

You will struggle to get anything larger than a 345mm rotor under a 17" rim, although some with TE37's say it is fine.

As for tyres a 255 width is good for an R32 R. Understand that R comps are often wider than their nominal size indicates. That fits ups nice to a 9" rim. 9.5" is you must. A 17" R comp (good ones not the bottom of the barrel stuff that gets mentioned on here alot) is about $100 cheaper per corner than an equivalent 18.

As for offset a +22 on the rear is good although you can use more on the front (smaller number, wider track eg +15) due to the amount of -ve camber you need to run on the things.

Other factors are weight & cooling. Dont buy cheap rims they fail in both those areas.

FWIW I use 17*9+22 with a 255/40/17 tyre. The rear guard lips need to be rolled and the front could use a fatter offset but Rays dont make the rims in the offset I want anymore.

Bottom line: If you can afford the coin for the tyres get the 18's. 9" width is enough. Dont listen to the hektic fitment types. What is fully sik in their world doesnt make much sense when you want some actual lap speed.

[JimmyRickard]

Thanks for that djr. I've been offered a set of Buddyclub P1 Qf's in 17x9 with +22 offset off an Evo. By the sounds of it they'll perfect right?

[djr81]

Should be about right. NFI what pcd's Emos run so just check it is 4.5 inches. Also that the load capacity of the rim is right & finally that they clear the rotor/calliper you use. Cant imagine it is a problem for any of these things.

In the olden days a 17*9+22 rim was the default option for aftermarket rims sizes. Then the fitment thing came along....