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I have Enkei RPF1s in 17x8 that are 7 kg. That's about as light as it is possible to get without going forged. Apparently 18x9s are only <1kg heavier. Just the wheel, obviously. -
Anyone have this kit laying about gathering dust.. Preferably text me on 0424 581 117 as I rarely get on here these days... -
Nah, nothing formal, just open track days. Mostly small and tight circuits but I would like to get back out to Eastern Creek at some stage. -
By Murray_Calavera · Posted
What type of track driving will you be doing? Do you have a set of class rules you need to abide by that will limit your rim / tyre width? -
I've been reading a lot lately about unsprung weight and how beneficial it can be to reduce it for driving on the track, given my semi's only have another day or two in them I am throwing around the idea of some lighter wheels and a square set up. I have 265/35/19's and 245/40(?)/19 Federal 595's at the moment. The wheels and tyres are super heavy. I looked up my wheel weight online and got 14.5kg naked. Not sure if this was 8.5 (front) or 9 (rear) but that's a lot. I have also been reading about the benefits of a square setup. Much better rotation and potentially less understeer. When I throw these together I'm thinking about a 17x9 or 18x9 square (preferably under 10kgs per wheel) with 245 or 255's. I can get some cheap 17x8.5 BMW M Sport wheels, they weight 10.5 kg's each but at 8.5 wide could probably only get 245's on them? I know they come with 255's from factory but semi's are a bit chunkier. Otherwise it will be aftermarket wheels in a 9" width. Most of the other BMW wheels are heavy unless you pay a squillion dollars for some M wheels. Although, the E46 M3 Style 67's could be good but I'd have to buy 2 sets to square them up. My car has a tickle over 400hp and about to put an LSD in also, is 245 a little thin for a square setup? It kinda feels that way to me. Also, is there any tangible benefit to having 18's over 17's? Is the footprint demonstrably bigger? From those of you who went to light(er) wheels after heavy buggers, did you notice it much?
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