Widest Wheels

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zach44102

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That's good to know. Loooking at getting a set of slicers widened to either 7.5" for a 215 tire, or out to 8" for a 225 tire. Might just go with the 8", which could work with the usual fener lip trimming on an '89.

I run 225/55/16's on slicers. Getting them widened would not be worth the money if you ask me, so much easier to buy a aftermarket rim and call it a day
 

mosho93

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I don't think it's a matter of money for Ron...It's a matter of OEM'ness with a performance advantage. 225's are about max width for a slicer and some say that's even pushing it. Just my .02
 

K-Dawg

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That's good to know. Loooking at getting a set of slicers widened to either 7.5" for a 215 tire, or out to 8" for a 225 tire. Might just go with the 8", which could work with the usual fener lip trimming on an '89.
.
I think you're aware but you'll need to run spacers and probably longer lugs becuase the material is only added to the inside. I wouldn't mind a 16x8" Slicer.

Back on topic, I can think of at least two Gen 2 SHOs with 17x9s.
 
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There are two things I want to know:

1. How can I change my Lug pattern to a 5x120 without putting strain on parts or needing major modification.

2. How wide do you think would be safe to go with rolled fenders? Thats rim and tires.
 

kevinspann

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#1 See if you can find a place to redrill the stock hubs for you. You're in the Charlotte area after all...

#2 depends on the offset of the wheel and even what brand of tire you're going to run...

...
 
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#1 See if you can find a place to redrill the stock hubs for you. You're in the Charlotte area after all...

#2 depends on the offset of the wheel and even what brand of tire you're going to run...

...

1. Sounds like a good Idea, I will look into it.

2. Toyo TR1's and 17x7.5's No clue about offset...
 

RonPorter

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I run 225/55/16's on slicers. Getting them widened would not be worth the money if you ask me, so much easier to buy a aftermarket rim and call it a day

225 is WAY too wide for a slicer. In fact, the stock 215s were marginally too wide. I run 215/45/17 on a 17x7.5" rim on the LGT, and that is perfect. I run street pressures on the track, and the tires all wear evenly, even with -2 of camber.The car came with 17x7" with the 215s, and the increase of the 1/2" of width is noticeable in handling and steering response.

225s are perfect for an 8" rim. Learned that the hard way on the 911 many years ago.

If my lace wheels were 16", I would have them widened out to 8"!!

I can keep the car closer to stock, and the resale value of a 16x8" slicer is FAR better than any other average aftermarket wheel. When I go to sell them, I bet they spend less than a day in the Classifieds!!

Everybody has aftermarket wheels. IMO, unless you get into wheels that are forged and/or are north of $300/wheel, most are boring and too common.
 

RonPorter

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.
I think you're aware but you'll need to run spacers and probably longer lugs becuase the material is only added to the inside. I wouldn't mind a 16x8" Slicer.

Back on topic, I can think of at least two Gen 2 SHOs with 17x9s.

I bought the white '89 with slicers and some nearly dead 225s on them. I was gonna measure the distance to the strut before I trash the tires. I figured that I may need a small spacer. If it looks too close, I may just go 7.5" and stay with a 215 tire, rather than major changes with a bigger spacer and longer lugs.

My aftermarket wheels on the original '89 were 16x7" with the same stock offset. Just needed the fender lip trimmed with the additional 1/2" or so of width outboard:

377476075.jpg
 

StreetlightSHO

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Just putting my specs out there:
I have a 2nd gen and I'm running 18x8s. The offset I'm pretty sure is 38mm.
Tires are 235/40/18. My SHO isn't lowered (yet), and they only rub when I have all my friends in the back seat and I hit a bump hard.
I'm definitely rolling the fenders before I lower it though.
 

RonPorter

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18x8.5's here, had to do some minor trimming on the fenders (GEN I). If you get the perfect offset, you can make it work.

Tim, that's encouraging, as I know your 18s should cause more of an issue than my 16s.

Offhand, do you know what the offset is?
 

DJSHO91

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225 is WAY too wide for a slicer. In fact, the stock 215s were marginally too wide. I run 215/45/17 on a 17x7.5" rim on the LGT, and that is perfect. I run street pressures on the track, and the tires all wear evenly, even with -2 of camber.The car came with 17x7" with the 215s, and the increase of the 1/2" of width is noticeable in handling and steering response.

225s are perfect for an 8" rim. Learned that the hard way on the 911 many years ago.

First off, comparing tire capabilities between a FWD sedan and a rear-engine RWD sports car is like comparing an airplane to a boat. They both move based on fluid dynamics, but (beyond that) what applies to one isn't the same as the other.

The factory designation for P225/55R16 tires show the wheel design range of 6"-8" with 7" used for measurement purposes. Here is what Tire Rack states about the rim width range.

Rim Width Range

Because tires have flexible sidewalls, a single tire size will fit on a variety of rim widths. A tire's rim width range identifies the narrowest to the widest rim widths that the tire is designed to fit. The width of the rim will influence the width(section) of the tire. A tire mounted on a narrow rim would be "narrower" than if the same size tire was mounted on a wide rim. NOTE: Because the overall diameter of a steel belted radial is determined by the steel belts, there is little, if any, change to the overall diameter of the tire due to differences in rim width.
:salute:
 

RonPorter

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First off, comparing tire capabilities between a FWD sedan and a rear-engine RWD sports car is like comparing an airplane to a boat. They both move based on fluid dynamics, but (beyond that) what applies to one isn't the same as the other.

The factory designation for P225/55R16 tires show the wheel design range of 6"-8" with 7" used for measurement purposes. Here is what Tire Rack states about the rim width range.

Rim Width Range

Because tires have flexible sidewalls, a single tire size will fit on a variety of rim widths. A tire's rim width range identifies the narrowest to the widest rim widths that the tire is designed to fit. The width of the rim will influence the width(section) of the tire. A tire mounted on a narrow rim would be "narrower" than if the same size tire was mounted on a wide rim. NOTE: Because the overall diameter of a steel belted radial is determined by the steel belts, there is little, if any, change to the overall diameter of the tire due to differences in rim width.
:salute:

RWD - RWD - AWD, doesn't matter.

There is a CORRECT rim width for each tire size. That puts the sidewalls perpendicular to the rim. TR uses the 7" for "Measurement Purposes", which determines tread width. From personal experience, 225 is perfect for an 8" rim, and over 5-6 sets of tires on 7" & 7.5" rims, a 215 is perfect for a 7. they publish5" rim. I did not get as good a result with Hankook RS2s in a 215 size on 7" rims as I did on 7.5" rims with the Azenis 615 and the earlier 7.5" Rotas with the Michelin Exaltos in a 215 size.

Track work confirms this more than anything you will see on the street. FWIW, the most horrible track results were with 225 ES 100s on slicers on my '94 SHO, which had Konis, Eibachs, and full subframe connectors. 55 psi HOT wasn't enough to keep them from rolling at Blackhawk Farms.
 

zach44102

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Different tires yield different results, my hankook's which were 2 ply and where compossed of nylon and poly handles so much better in the corners with less tread squirm compared to my continental extreem contact DWS's with a 1 ply poly sidewall
 
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RonPorter

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Different tires yield different results, my hankook's which were 2 ply and where compossed of nylon and poly handles so much better in the corners with less tread squirm compared to my continental extreem contact DW's with a 1 ply poly sidewall

???

According to the TR site:

The tire's internal structure includes twin steel belts that are reinforced with spirally wound jointless nylon cap plies to provide long-term integrity under high speed conditions while reducing weight and helping to provide more uniform ride quality.
 

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