How wide is good enough Damn.

[L99CAMA2011]

Ok so I successfully fit the 19x10.5 TSW Nurburgring rim with 305 30 19" Bridgestone RE-11 up front with my Bilstein PSS10s and 8" ,2.5" internal diameter 450lbs Eibach spring . Now the 305 30 19 Yokohama AD08R shows up with 1.3" wider thread width and now I want to fit that up front. The AD08R on the 10.5" rim is not going to be a tight fit like the RE-11s. It will however fit the Z28 rims perfectly but they aren't available for sale to non Z28 owners, bummer. RE-11 actual real world threadwidth is like 10.4" , Yokohama AD08R is literally 11.7" no freaking joke , way wider foot print over the RE11. Figure I would be happy with the RE-11s at all 4 corners but no , I've got the need , the urge to fit the AD08Rs up front as well. 1LE / Zl1 285 front tire is like 9.5" thread width.

[Norm Peterson]

Forgestar 20 x 11's, in your choice of offset? Even 20 x 12's are available, although that's a slight stretch beyond what either of these 305/30's are supposed to be fit to. I couldn't tell you who to go through that would know what offsets the Camaro in general or yours in particular would need.

What I am seeing for the tires is 11.6" tread width at Tire Rack and 11.8" at Yokohama for the AD08R and 11.1" at Tire Rack for the RE-11. Both tires are 12.2" section width on 11" wide wheels, and are both approved for 10.5" - 11.5" wheels. That the section width is the same means that tire to strut clearance won't be any different.

The 0.6-ish tread width difference (I'm using the "average" of the above two numbers) becomes 0.3" wider per side, so I doubt that sheetmetal clearance is going to suddenly become an issue if it isn't already.

I could put together a rough comparative plot of any combination of these wheels and tire sizes if you think it would help any.


Norm

[L99CAMA2011]

Originally Posted by Norm Peterson

Forgestar 20 x 11's, in your choice of offset? Even 20 x 12's are available, although that's a slight stretch beyond what either of these 305/30's are supposed to be fit to. I couldn't tell you who to go through that would know what offsets the Camaro in general or yours in particular would need.

What I am seeing for the tires is 11.6" tread width at Tire Rack and 11.8" at Yokohama for the AD08R and 11.1" at Tire Rack for the RE-11. Both tires are 12.2" section width on 11" wide wheels, and are both approved for 10.5" - 11.5" wheels. That the section width is the same means that tire to strut clearance won't be any different.

The 0.6-ish tread width difference (I'm using the "average" of the above two numbers) becomes 0.3" wider per side, so I doubt that sheetmetal clearance is going to suddenly become an issue if it isn't already.

I could put together a rough comparative plot of any combination of these wheels and tire sizes if you think it would help any.


Norm

Thanks Norm. But in the real world the RE-11 is actually 10.4" thread width. That part of the tire has a rounded shoulder look that miss my Bilstein Pss10 spring perch where the YOKs would hit bit time and tear into the tire that has a squared shoulder. 10.4 vs 11.8". This is the issue. Plus the RE11 fits my 10.5" rim very tight for great front end laser sharp response where the YOK is likely going to be sloppy in the front. The YOK 305 is actually very close in dimension to the R888 TOYO 325 30 19. Look at the tire rim fitment on this GTR with 18x10.5" that's how the Yokohama would look. http://www.gtrheritage.com/topic/129...k-wheel-setup/

[Norm Peterson]

So you're telling me that the Pss10's perch is right at to barely above a 305/30-19 RE-11 tire's unloaded radius and close enough that a dimensionally slightly taller tire with squarer shoulders will hit?


Norm

[L99CAMA2011]

Originally Posted by Norm Peterson

So you're telling me that the Pss10's perch is right at to barely above a 305/30-19 RE-11 tire's unloaded radius and close enough that a dimensionally slightly taller tire with squarer shoulders will hit?


Norm

I'll take pictures and show you. I gotta get off my lazy ass and post those pictures. Sorry this NE cold weather and snow got me lazy is heck. Both tires are the same height just that with the wider threadwidth and square shoulder of the Yokohama there will be perch rubbing issues. The perch is actually on the same level as the last 1/4" of the top of the tires. The round shouldered RE-11 makes it work where as the Yok will hit. I also have camber plates that can be set to a more performance camber to give more clearance.

[L99CAMA2011]

A few pictures showing my front 19x10.5" setup. Actually looks much better in real life. The Nissan GTR in the picture is equipped with 18x10.5" but this is what the wheels would look like with the Yokohamas on them instead of the Bridgestone RE-11s. Pictures with the ruler is the RE-11 top and AD08 under it, clearly shows how much wider the threadwidth of the AD08R is over the RE-11.

[Norm Peterson]

Originally Posted by L99CAMA2011

The perch is actually on the same level as the last 1/4" of the top of the tires. The round shouldered RE-11 makes it work where as the Yok will hit. I also have camber plates that can be set to a more performance camber to give more clearance.

Yeah, that is cutting things close when one tire fits and another in the same nominal size doesn't. And I've worked to within 1/32" wheel to outer tierod end (no spacers) before.

Thanks for the pictures. Truth be told, I'd always prefer to put 295/35's on 11's or 11.5's anyway.

10.5's are for those little 285/35 sizes that's about all I can reasonably fit on my car without needing staggered-offset wheels


Norm

[L99CAMA2011]

Originally Posted by Norm Peterson

Yeah, that is cutting things close when one tire fits and another in the same nominal size doesn't. And I've worked to within 1/32" wheel to outer tierod end (no spacers) before.

Thanks for the pictures. Truth be told, I'd always prefer to put 295/35's on 11's or 11.5's anyway.

10.5's are for those little 285/35 sizes that's about all I can reasonably fit on my car without needing staggered-offset wheels


Norm

I think 285s on a 1st gen S197 should be great. Hey check out Griggs Racing wheel set up, I think 18x 10.5. Also Fords performance has BBS rims in that same size I think.

[Norm Peterson]

Thanks. L99, I'll have to take a peek over there in addition to Terry Fair's Vorshlag and Sam Strano's Stranoparts sites. More options are always good to be able to choose from.


Norm

[X25]

I'm trying to find an affordable yet very light set of wheels for my 1LE for track duty. I was thinking about going with these wheels (19x10.5 Nurburgrings). I will be using them along with coilovers, and either 295/30 or 305/30 R888 tires. Would you recommend this setup? Would it easily work, or would it be a headache? If it's going to be too close, I don't think it would be appropriate for track duty :(

[L99CAMA2011]

Originally Posted by X25

I'm trying to find an affordable yet very light set of wheels for my 1LE for track duty. I was thinking about going with these wheels (19x10.5 Nurburgrings). I will be using them along with coilovers, and either 295/30 or 305/30 R888 tires. Would you recommend this setup? Would it easily work, or would it be a headache? If it's going to be to close, I don't think it would be appropriate for track duty :(

I actually switched those same TSW wheels with Hankook RS3s 305-30-19s with a friend on his stock struts. It was like 2 mm or 3mm away from the strut. Toyo R888 run wide. I had a 295-30-19 and it was as wide as the Hankook RS3 305. What coilovers do you have. If they are like BC racing ERs maybe. You just missed out on my Camber plates sale. With those, I had 2 degree camber and then there was no fear of rubbing. But I just sold them .

[X25]

Originally Posted by L99CAMA2011

I actually switched those same TSW wheels with Hankook RS3s 305-30-19s with a friend on his stock struts. It was like 2 mm or 3mm away from the strut. Toyo R888 run wide. I had a 295-30-19 and it was as wide as the Hankook RS3 305. What coilovers do you have. If they are like BC racing ERs maybe. You just missed out on my Camber plates sale. With those, I had 2 degree camber and then there was no fear of rubbing. But I just sold them .

So you're saying if I can ensure 2+ degrees of camber, I should be fine with any tire with these wheels? I found these wheels brand new for a great price, and if it works, it could be an awesome track wheel set : )

[L99CAMA2011]

Originally Posted by X25

So you're saying if I can ensure 2+ degrees of camber, I should be fine with any tire with these wheels? I found these wheels brand new for a great price, and if it works, it could be an awesome track wheel set : )

Well bud, not any tire. For example you won't be able to run a 335 F know what I mean. But you should be able to fit that R888 up front. I honestly would also consider the CCW 18" wheel setup. Sticks out but use them for track only and be done.

[FKNGRSY]

do you have any more pics? Love big r-compound tires on these cars.