Moos0004

I would like to get a set of Apex Wheels 18x10 et40 for track day I'm looking for feedback on fitment and installation of extended wheel studs. Is anyone running Apex wheel? https://apexwheels.com/vehicles/lexus/gs/l10-gs-f#construction=flow-formed&design=sm-10&finish=anthracite&frontQty=2&frontSize=18x10-et40&rearQty=2&rearSize=18x10-et40

kukudm

You don't need extended wheel studs if you're not gonna run spacers. I'd be more concerned about those 18" clearing the front brake calipers.

Oops I spoke too soon, interesting to see they require wheel studs. Wheel studs are not too difficult, as long as they clear the brakes, then should be all good.

lobuxracer

iTrader: (2)

The only worthwhile extended wheel studs are from ARP. They're not difficult to install. You'll need the appropriate lug nuts to work with them and your wheels, but I assume you already know that if you are considering this swap. Many IS F owners are running these without issues.

Moos0004

@lobuxracer thanks for the information on the stud. I will be getting those. Any recommendation for spacers? I am thinking about going with a 10mm spacer on the rear only. Also I was thinking about getting the 18x11 wheel for the rear and keep a staggered set up. Do you know if a 18x11 will fit on the rear of GSF and is there any negative with going at 11 on the rear besides can't rotate up frpnt. I have a stock set up with the exception of minus 2 camber up front and I feel the car is struggling for traction coming out of corners hence my reason for considering a wider rear wheel.

lobuxracer

iTrader: (2)

Spacers won't fix the issue. The car is really heavy, and way under tired. My IS F struggles to do 20 minute HPDE sessions before the tires get greasy. I can't imagine how quickly the GS F gets loose with an additional 250 pounds. Most Supra owners who track their cars run 295 - 315 on all four corners for a car 400 pounds lighter than my IS F. The real trick is stuffing enough wheel in the wheel well for the widest tires you can get on the wheels.

Nunz

@Moos0004 I know a RCF owner in MD that runs APEX wheels for time attack events/ track cross. He runs a 18x10 APEX setup with 275/40/18r tires. To my knowledge he said he did not need the extended wheel studs for the set. I am unsure which rims he uses but to @lobuxracer 's advice, the extended studs seem to be fairly straightforward install.

@lobuxracer for an 18x10 square setup, what is the largest tire you could run on a square setup for a GSF? 285 possibly?

lobuxracer

iTrader: (2)

285 is about as wide as a 10" rim will support. You'd be better if you can fit wider.