A little toe-in in the rear will add stability under hard braking (like after a long straight on the track) so "0 toe" is not ideal. A small amount of toe-out in the front can also help with turn-in, but will increase the amount of wear on the inside of the tire. Some alignment shops also add a small difference of toe-in for the front to help keep the car tracking center on the road, which generally always has a small amount of crown to help water run off the road into gutters. I often need to give specific instructions to my shops to give me 0 toe or a small amount of toe-out, but an even amount when I'm expecting an immediate track day vs street driving.
You can tell them that you don’t want that offset for the crown and they will look at you funny, but they will comply with your request after warning you that it voids blah blah blah.
Thank you for the video! Could you do a video comparing the HKS drop in filter to the K&N filter vs stock? Maybe taking out the charcoal filter as well? Do some dyno runs and check the difference? Much appreciated!
I know this might be a dumb question I also want to go basic mods/upgrades so basically the 18x8.5 rims like the ones in this video which I like with a 45mm tire? I can’t use the stock tires and just switch rims or would I rub and would it not be fitted correctly?
Tire specs would have been really helpful, at least in the description. If I had to guess, they are probably running a 245/35/18 for option 1, but they would have to confirm. Also, what is the suspension setup on the BRZ for option ? Looks lower than stock.
Maybe do a similar style video with different tiers of ride height explaining what you need suspension wise the more you lower your car. Daily Street Track Stance
Thank you so much for this video it's been a burning question for me! So if someone was running track camber (-2.4 to -3) then 18x8.5 +40 would be ideal flush fitment? Does that mean you'd be able to fit 255s front and rear or only 245s? My state is very strict so I can't afford to have poke but I'd also hate to have too much tuck as well. Also this is a silly question but does this fitment involve any fender rolling? Thank you 🙏🏻
Titan website says 9x18/17 +47 for the gr86 BRZ. Can you please do an updated video with the new recommended size. I'm not sure what tire will fit and what mods need to be done
I have that style lower control arm and I run 18x9 +35 with 1.8 degrees front and -3.2 degrees rear camber no rubbing, no scrubbing. front flush rear nearly flush.
Anything is possible - Watch our ruined video posted before this one. What is your ride height and tire , these things matter also. There are always 4 things to consider 1. Wheel specs 2. Tires size / stretch / profile 3. Camber 4. Amount of drop and suspension travel and dampening stiffness.
So at what ride height do you start running into this sort of issue as well? And yes I realize wheel width is the biggest factor when dealing with tire to fender contact. So are people dropping down 1" inch? 2" inches? 3"? Personally I'm not a "stance" kind of guy so camber really isn't my taste. Thanks in advance
Im not in the americas, and as such wheel choices here are different without paying stupid markups. I'm looking at running an 18x8. They come in either +35 or +42, i was thinking +35. With the stock 215 on the front and a 245 on the rear. Do you recommend 40 or 35 for the side wall? The suspension is stock ride height. I wont be lowering it, as im 6'4" and only getting older. I probably wont be adjusting any of the suspension or steering parts for the warranty period because its only a street car. I just want to personalise it to my taste. Any help is appreciated.
Other examples of the 18x8.5 +40ish on stock suspension show the rear being pretty close to flush but the front wheel having a lot of tuck. What has been done to the car in the video? just lowered? spacers?
My 18 x 8.5 + 38 wheels stick out more than yours. Not sure whatsup. Hoping these BC racing coilovers I just ordered will have the proper camber adjustment Ill need. Im pretty worried about rubbing.
Thank you for the video, this was extremely helpful! One question though: For people who are opting for option 2, could they also go with thinner aftermarket coilovers instead of aftermarket control arms to fit that 18 x 9.5 wheel with 255 tires? Maybe with a slightly bigger offset? Or to put it differently: Is there a way to fit 18 x 9.5 wheels without exceeding 2.5° of camber AND without having to trim that fender part as it was shown in option 3? And a follow up question: Why is a 255 tire no problem on a 8.5 wheel but problematic on a 9.5 wheel? Shouldn't the tire width be the deciding factor when it comes to fitment, because it is the part that comes closest to the fenders?
Offset is based off the center of the wheel so 40 offset with a 8.5 pokes out less than a wheel with 9.5 40 off. You need to run more negative offset to make up for the difference.
Did you watch the ruined video - we explain the 9.5 on or GR86 and where all the issues are in detail - offset and camber and ride height all will play a part
The 9.5" rear wheel looks great, but it's not ideal for autocross and will hurt your top end on all straights. It also won't help as a daily because the really grippy rear end is no longer playful around turns. The 8.5" wheel is best. Run a spacer if you want to fill that gap.
@@86Speed Would a +51 offset work for 18x9 on stock suspension? Because I'm looking into the new Advan GT Beyond 18x9 +51 for my GR86. Also, as for 18x8.5, how much play can we have in the offset from +40? Thank you.
@@86Speed Oh sorry my car hasn't been delivered yet haha. I'm getting a bit hyped about mapping out what I want to do to it. But I will come back and give you guys a call when I get the car
It sounds like 18x9.5 +38 with tires that are 255 is the main rubbing factor. If I got 18x9.5 +38 with 245/40 would I still rub? I’m thinking of dropping the car just an inch.
