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Discussion Starter · #1 ·
Before I get slammed, I have done the searches and asked a few people......here is what I have decided. I have a basically stock 87 GN. I don't take it to the track and I want to more or less maintain the stock appearance. I hate the stock tire size though.....rear wheelwells, I have measured between the wheel well lip and the tire sidewall getting 1 3/8". Between the inner sidewall and frame is 1 1/8". My intent is to beef up the appearance and stance a bit. Tires on it now are Michelins...I'm not sure if my measurements may be affected by the make of tire.

I will be using stock rims and offsets. no spacers and no airbags. I have decided to use 255/60/15 on the rear. If my calculations are correct, they should be just over 3/4" wider inside and outside (1.58" total). I think I want 245/60/15's on the front.

Finally to my question....Does anyone have pics of their ride with either of these sizes?

Also, Anyone have any experience with Cooper Cobra's? I heard they are made by Goodyear, but don't know much except they're cheaper than BFG's

Sorry this is so long!
 

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Older--but Getting Wiser
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I wouldn't go over 235X60-15 on fronts. 255x60-15 on rear = no-brainer! :sw:
 

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Discussion Starter · #3 ·
I know they'll fit. I'm just trying to get a sense of how they will look, because I also considered 265/60/15, but I think they would be too tight on the frame.....thanks for the info on the front, I dont want any rubbing
 

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How wide a rim are you running with those tires, I have 15x7 GNX Kirban look alikes, do you think they would fit on a 15x7 or do I need a 15x8 rim. :dunno:
 

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My 235's rub sometimes up front, so I'd say 245's are out of the question.
(I have a T-type, but the offsets are the same)
275/50/15's are perfect for the rear and will STUFF the wheelwell nicely.

I had 255/60/15's on the rear before going to the drag radials, and they looked fine too.

I'll see if I can dig up a pic...
 

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stock 86 t type wheels with 255 60s on rear and 245 60s on front i have new springs though. the 85 i had with tired stock springs the front rubbed a little.
 

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Discussion Starter · #8 ·
ok, 235's on the front sound like the way to go. I'm still gonna keep an eye out for pics of 255's for the rear, maybe 265's....i don't know.......I think I want to stay with a 60 series for a little taller stance.
 

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If you're wanting stock tire height 36" I think 275/50s are the way to go, but if you want to fill up the wheel well more my favorite are 275/60s. That will give you almost a 28" tire height though.

Here are some 275/60s. Not stock rims, but they will work on stock rims too.

 

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buick87gn said:
The top pic looks great! Is that the 275/50/15? what did you do to the rear suspension? what size are the front? Like I had said previously, I am using stock rims and suspension.

275/60 in both pictures. The top just has the tire shined up. That's also stock suspension. The tire is 2" taller than stock tires and will set your car up some.
 

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Discussion Starter · #12 ·
Bishir, I just looked at your web page. Answered my own question about the rears. As long as I can pry them on my stock rims, thats what I'm gonna do! Would like to know about the suspension and the front size though....
 

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Like I said, the suspension is stock in those pictures. The welds I had were 7" wide so stock rims will be ok. If you put a 50 on a stock rim it would have a very noticable bulge, but the 275/60 will look better IMO. I no longer own these rims and tires, but I believe the fronts were 245/60s.
 

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Pix

Ok, you asked for it so here 'tis. 235x60-15's on front & 255x60-15's on rear, with original, certainly saggy springs @ both ends. I have air shocks on rear--but they're down here, after setting several months.

With much sag/wear-in of front springs I'm afraid 245's on front would rub--esp. in turns with a small bump.

I pump up my air shocks to 65-75 psi to get decent ride (rear) & it also gives it a little more rake. [I'll take another pix soon of side view w/ rear shocks pumped-up] Hope all this is of some value to you,,,
 

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Discussion Starter · #15 ·
Well.....After seeing Bishir's car and Orlando_87GN's car, Ive decided on 275/60/15's on the rear and 235/60/15's on the front. To be safe I just ordered Moog CC627 springs from Summit ($57.99) since I have the original 60,000 mile old springs......Before I buy the tires, any last thoughts from you guys??.......I decided against the 50 series cause I am running stock GN rims and think there would be too much bulge......Thanks again!
 

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Well, I don't care that you already made your mind up or not--I went to trouble to take some more pix--so I'm gonna show them anyhow! Don't look @ them if you don't care,,, (I'll only bore you with one pix--which gained 1'' from 26.5-->27.5" to wheel well lip going from 0-75 psi...).

Monte :rolleyes: :D :headbang: :cheers: :yup:
 

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