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Discussion Starter #21 (Edited)
I would assume so, but I have never looked under an NA. I am not sure, but I think the NA had the same size tire front and rear. If this is the case, I would try to maintain that setup. Maybe a 265/35R18 all the way around.

Later, Steve
 

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Very nice tool. Thanks, Steve!

A couple of comments:

First, I noticed that the example of good fitment under "Rear w/ rolled fenders" (315/30/18 on 11.5" rim w/ 45mm offset) actually triggers one of the error messages. If offset is changed from 45 to 46, everything is fine.

Second, I am curious to know how the rim width is chosen. For example, why would an 11" rim be a better choice than the 11.5" rim for a 315 tire.

Lastly, after playing with it for a little while. It seems that the best all around fitment for a Supra w/ rolled fenders is 275/35/18 front and 315/30/18 rear on 18x10" w/ 55mm offset and 18x11" w/ 46mm offset rims.
 

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Discussion Starter #23
$upraMan,

FIRST You are correct, I knew I would have at least one error in there somewhere. :mad:

SECOND I am not saying that an 11.0" rim is the best rim for a 315. I am only using the rim that most manufacturers are using when measuring a given tire size. Most manufacturers use an 11" wheel when measuring a 315. I would personally prefer an 11.5" wheel for a 315. The spreadsheet needs to know that a 315 is .2" wider on a 11.5" than 11", so it looks at the measured wheel width so it knows whether to add or subtract from the tires measured section width.

LASTLY That looks like a pretty good fitment. I would probably reduce the front wheel to an 18x9.5" 50mm offset. You will also need some suspension (such as swaybars) to keep the car balanced. Keep in mind that your choice will be dictated by the available sizes/offset the wheel manufacturer offers. Also remember that you are on the extreme end of the possible fitments, so your on your own.

Later, Steve
 

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I'll play with it some more. It's a nice spreadsheet to have. Thanks again, Steve!

BTW, what do you run on your car? Or better yet, what would you run if you had to do it over again?
 

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Discussion Starter #25
I currently run 265/35R18's on 18x9.5" 50mm offset front and 295/30R18's on 18x10.5" 55mm offset rear. If I had it to do all over again, I would probably run a 275/35R18 on 18x9.5" 50mm offset front and 315/30R18 on 18x11.5" rear with a TRD 27% stiffer front swaybar and a TRD 53% stiffer "Big Ass" rear swaybar.

Later, Steve
 

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i keep trying and its not working
 

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Discussion Starter #27
e-mail me at [email protected] and I will e-mail you the fitment guide.

Later, Steve
 

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Reviving this thread.....

I was looking to put the following on the GFs MKIV... since the fitment guide says they're a good fit.

18x10 +47 (285x30) rear
18x9 +48 (265-35) front


However, instead of trying to fit the largest tire on the front/rear wheels, I'd like to match them a bit better for handling. Kinda middle of the road.... so, will I just need to add an inch (or .5") to each wheel's width AND increase the offset some, in order to let's say put a 11" wide wheel in the back and still use the 285/30 sized tire?

For instance,
Using the guide, will this work just the same as far as looks/fitment, but have a better handling ability?

WHEEL TIRE |Fitment guide info.....
Fronts: |
Good Fitment 18x9.0 +48 265/35 |9.4 3.23 7.01 10.23 25.3
My preference 18x9.5 +50 265/35 |9.9 3.25 7.19 10.43 25.3

Rears:
Good Fitment 18x10.0 +47 285/30 |10.4 3.76 7.46 11.22 24.7
My preference 18x11.0 +50 285/30 |11.4 3.74 7.68 11.42 24.7



Thanx in advance.... just looking for a lil' input, before dropping the cash on it....
 

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It is a pretty good guide, hopefully I'm using it correctly.... Suprised it's not in the sticky section somewhere.... I had to search way far to find it again.....

So... whatta ya think? Since the width of the tires/wheels still almost meet (or are below) the results of the "good fitment," will she be okay driving/handling with some good tires (Goodyear F1 GS D3s)?
 

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Discussion Starter #31
I didn't realize the thread was no longer a sticky.

The fitment you detailed above will work fine.

Later, Steve
 

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Thanx Steve... we're getting them ordered now...

Any chance you have, or know of a fitment guide for the MKIII...? I've got 17x8s all around on mine, but am thinking of putting more meat on it, since I put the 2JZ in it..... TIA!
 

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Hi All,

Steve I was just wondering if you'd give me your opinion on the following:

Front: 18x9 35mm offset
Rear: 18x10.5 44mm offset

It seems to me that these wheels severely limit you up front up front and only permit up to 275 35 at the rear.

Going to a 245 40 front and 285 35 brings up the offset too small prompt. What would be the physical effects of this on the car?

Is a 35mm offset on the front pair simply wrong? I know several traders selling wheels in these sizes :( I was considering buying a set but don't want to get stumped with a useless set of wheels. Is the 44mm offset on the rear too small for a 10.5 rim, enough to severely limit tyre choice on a 1" lowered car?

Many thanks if you can help at all

Dan
 

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Discussion Starter #34
The front can be used, but you could only mount a 235 which would look stange on a 9" wide wheel.

The would allow for a 285/30R18 (the guide will say it won't fit, but a simple alignment change can give you the needed clearance if it rubs). I would not recommend the 285/35 because it is a very tall tire.

Later, Steve
 

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Thank you Steve, much appreciated.

A 285 30 is what I meant to type sorry. In my mind then, the rear is fine as I'd never want to go any wider than that. I have 275 35 in my garage waiting to fit anyway.

However, only a 235 on the front is no good to me. What would actually happen runnning a 245 40? Rubbing on the inner arch or some strange handling defiency. Basically is the 245 40 a definite "no-no"?

Many thanks
 

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Discussion Starter #36
It would probably rub the top of the fender liner and the front of the fender liner.

Later, Steve
 

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steve...i plan on getting 19x9.5, 19x10.5 volk gt-c face 2 all around. i don't know which offset to get. i would cut my fenders so i'm hoping to fit a 265/30 and 305/25...you think i'll run into problems? also what tires would you recommend in those sizes?
 

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Discussion Starter #38
Post the available offsets.
 

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MKIV Fitment

I've asked before but lost the information. The set of wheels is 18x8.5/18x9.5 with a 38mm offset. What tire sizes? Will these clear the brakes? Thanks
 

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Discussion Starter #40
Chris,

I have no way of telling you if the wheels will clear the calipers, but the tire sizes would be 245/40R18 front and 265/35R18 rear.

Later, Steve
 
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