Wheel size and fitment

[bsclywilly]

I hope that there are others like me who will find this thread useful. If you have any information regarding the diameter, widths and offsets that are compatible with the 86, post them here.

The larger wheel manufacturers out there determine their compatible wheel sizes based on CAD data released by Toyota. I wouldn't be surprised if those sizes are a bit conservative and what I'd really like to know is how wide of a wheel you can fit with what offset.

Here's what I've heard so far from my contact at Enkei.

Enkei is not OEM wheel supplier as much as I know.
> But I have some information already.
>
> Good aftermarket size in 17X7.5 5-100 ET35 to ET40, or 18X8 5-100 ET35 to ET40.
> Original tire and wheels is 17 inch.
>
> 17": PF01 and Fujin are good
> 18": RPF1 and Raijin are good
>
> Yokohama Tire will have ride and drive event this year, it is about 15 locations in USA with FT96 sponsored by Scion and Enkei.
> We will use 17X7.5 PF01 and 18X8 RPF1. Once I will get the pictures, I will send to you.
>
> I am sure 17X8 ET35 is no problem for race but do not know details on 17X9 yet.

The first thing I'll be doing with my 86 will be checking a number of wheel and tire fitments.

[coyote]

If one of the many people who has access to these things would simply measure the distances between the stock tyre, strut body and guard (fender), the guessing could all end.

[#87]

PF01 is my first choice for sure. I'll look at others only if they don't have a good set to match the 86.

[FRSpdDmn]

Will!! I just caught your post here. It's Anthony Magagnoli... I drove the silver E30 in the One Lap in '10 and the winning car at the 25hr/25min/25sec ChumpCar race at Nelson, where I saw you in October.

Just wanted to say hey. I just sent you a fb friend request.

ttyl

[Lonewolf]

I just want to be able to run 225/45 17 on the FR-S without rubbing or clearance issues.

I know that the engineers at Toyota and Subaru know what they're doing, but in RWD vehicles, I want a decent contact patch and more grip than needed. It's not like I'm looking to take this car drifting, so I don't need the tail to step out on me to enjoy this car.

[balance]

Not that I discredit your contact at Enkei, but I find the recommended wheel size somewhat incredulous, especially the offsets. It's been confirmed that the stock FR-S wheel is 17x7, +48 - typical of subaru's sizing. Do you think that it's safe to go down 8 to 13 mm in offsets considering the well-known vulnerability of subaru's wheel bearings especially if you are gonna do some sort of motorsport activities? (I'm curious to know, too) Of course, such a concern is not going to apply to hellaflush ppl though.

[old greg]

Originally Posted by balance

Do you think that it's safe to go down 8 to 13 mm in offsets considering the well-known vulnerability of subaru's wheel bearings especially if you are gonna do some sort of motorsport activities?

I wouldn't worry about it. The bearing issues are on cars that are ~500 lbs heavier. And as far as offset being the culprit, the higher lateral forces from fat sticky tires will add a lot more stress on the bearings than an extra 1/2 inch of frontspacing.

[balance]

Yeah, hopefully the lighter weight will alleviate the problem.
IMO, "Motorsports" = "Big fat sticky tires"- Hence, I'm concerned...

[old greg]

My point is that fat sticky tires with +48 wheels aren't much kinder to the wheel bearings than fat sticky tires with +35 wheels.

[Dave-ROR]

Some of the Subaru owners here noted that the newer bearings were vastly improved anyways. I have no idea if that's true or not.

[7thgear]

Originally Posted by old greg

I wouldn't worry about it. The bearing issues are on cars that are ~500 lbs heavier. And as far as offset being the culprit, the higher lateral forces from fat sticky tires will add a lot more stress on the bearings than an extra 1/2 inch of frontspacing.

it's not the lateral forces, it's the vertical

take a pencil and hold it in your fingers, then apply pressure with your other finger right next to the ones holding the pencil

now do it an inch apart

get it?

[old greg]

Originally Posted by 7thgear

get it?

LOL, yeah dude. I get it. I have a much greater understanding of this stuff than you seem to think. My comment stands.

[MRZ415]

ET30 is MAD .. unless you run super skinny tires..
I have a set of ET37 BBS ... and at current height I RUB like crazy( current car))
Now I have a set of Enkei RPF01 which is Offset 48....

You can do it for looks but drive SLOW so you wont rub and people can see your ride.
or Not go for looks.

I am currently looking at the Enkei Spec chart... and I am curious if for 5x100 16s will fit
because it'll have ET35 ... 5x100 16Inch Enkei RPF-01 ET35 7Inch Wide... on 205/55-16

I am currently pretty much done with big wheels .... skinny tires and dropping my car((which is on Coils))
On the BRZ I intend to run 16s intead of 17s

[Asphalt]

hypothetically, if you were to chose a 17x8 inch rim with +35 offset, how would that compare to a 17x7 +45 or whatever? would that fill in lateral wheel gap? how would the rims stance be?