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#1058049 - 07/01/18 09:12 PM Wheel for 86 SS questions  
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Thrash86 Offline
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Hey everyone, my 86 Monte SS project has been on hold for way too long due to t-top resto problems and money. I'm looking to get that finished up this summer and after that it's onto the chassis upgrades and wheel/tire setup. I'm shopping wheels right now and here's what I'm looking at:

Front: 18x8 / 245-40-18 - 4.5"bs

Rear: 18x9 or 9.5" / 275-40-18 or 285-40-18 - 5"bs

My questions pertain to the rear wheel/tire choice. I don't want it to stick out and trying to get it as flush as possible and don't want to do any frame notching. I'd go for trimming fender lips if need be with a 9.5" wheel, but I'd prefer not to.

1) If I went with 18x9 should I go for 4.5" backspacing or 5" backspacing like the 9.5"?

2) what tire size should I go for with the 18x9 and the 18x9.5; 285-40-18 or 275-40-18?

It's hard to choose wheels. My Monte is painted all black--any suggestions?

Last edited by Thrash86; 07/01/18 09:13 PM.
#1058051 - 07/01/18 11:01 PM Re: Wheel for 86 SS questions [Re: Thrash86]  
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could be answers you are looking for down in the rolling chassis stickies..
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=325469#Post325469


86 MCSS Notchback coupe, LS3, 4L65E, QP 9", Eaton Truetrac, 4 wheel disc, column shift, Dakota Digital, silver with maroon bench interior

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#1058052 - 07/01/18 11:28 PM Re: Wheel for 86 SS questions [Re: upflying]  
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Originally Posted by upflying
could be answers you are looking for down in the rolling chassis stickies..
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=325469#Post325469


I should have mentioned--I searched about this and read a few threads including the one you linked, but the specific question I had for the back wheel/tire I couldn't find an answer. I'm looking for someone who has done this 18" wheel setup, or close to it.

Last edited by Thrash86; 07/01/18 11:29 PM.
#1058055 - 07/02/18 01:47 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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You should probably message Sick Speed Monte, Bernie is really good and this and has 17" wheel/tire combo on his Monte, good luck!


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#1058056 - 07/02/18 02:08 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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200kSS Offline
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There's a guy on here running an 18" wheel in the size you are looking at.

I have the 17" version, 9.5 wide with 5" BS. 275/40 tire, just remember there is a big difference in actual size of the tire between manufacturers.

For the rear, if you go with a 9" width, stick with 5" BS and add a spacer if needed to make up the difference.


88 SS Black/Oxblood. Power Tour car
80 Malibu 2dr. Drag Week car
#1058057 - 07/02/18 07:06 AM Re: Wheel for 86 SS questions [Re: 200kSS]  
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Originally Posted by 200kSS
There's a guy on here running an 18" wheel in the size you are looking at.

I have the 17" version, 9.5 wide with 5" BS. 275/40 tire, just remember there is a big difference in actual size of the tire between manufacturers.

For the rear, if you go with a 9" width, stick with 5" BS and add a spacer if needed to make up the difference.


Ah didn't even think of the differences between tire manufacturers.

Yeah that sounds good if I go with the 9" wheel. About the 9" or 9.5" I'll go with whatever they have available, though I prefer the 9.5".

Hard to decide what to go with for the wheels. I'm not a fan of the american racing torque-thrust II's or other similar styles like the boss 338, etc. They are nice wheels but don't like them on G-bodies. Love the CCW classic but they are way outside the budget.

SickSpeedMonte has really nice wheels, I like the style of center line retros but they don't make those anymore from what I can tell. Also really like the Year One N90... GM nailed it with the rims for these cars I think, but you can't get a wider rear wheel than 8" in them for the rear, AFAIK. Too bad.

Last edited by Thrash86; 07/02/18 07:07 AM.
#1058067 - 07/03/18 02:42 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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If you can hang with 17s, Summit has the Center Line Retro Legends in 17x8 (4.5" backspacing) and 17x9.5 (5" backspacing) on sale and may be some of the last ones available.

https://www.summitracing.com/search...d-wheels?autoview=SKU&ibanner=SREPD5


Original owner of 1985 SS black hardtop w/gray interior. Frame-on restoration - 406 sleeper w/ heavily ported FIRST TPI. However the 1.875" headers, 3.5" duals, TH400, Ford 9", notched frame, and 10-point cage w/swing-out bars might tip you off it's not a lil' ole 305 TPI. Other mods: 2" drop, 18" wheels, f/r disk brakes, and custom stereo system.
#1058068 - 07/03/18 02:54 AM Re: Wheel for 86 SS questions [Re: BadSS]  
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upflying Offline
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Originally Posted by BadSS
If you can hang with 17s, Summit has the Center Line Retro Legends in 17x8 (4.5" backspacing) and 17x9.5 (5" backspacing) on sale and may be some of the last ones available.

https://www.summitracing.com/search...d-wheels?autoview=SKU&ibanner=SREPD5

Which diameter wheel, 17" or 18" is easier, more common and ultimately cheaper to find tires with more variety?

Last edited by upflying; 07/03/18 02:56 AM.

86 MCSS Notchback coupe, LS3, 4L65E, QP 9", Eaton Truetrac, 4 wheel disc, column shift, Dakota Digital, silver with maroon bench interior

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#1058069 - 07/03/18 03:06 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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There's more variety of tires available in 18s. However, the 17s are probably more common on the Montes, less expensive for now, and there are plenty of 17" tires available in the combo size 245/45/17 and 275/40/17 tire for an untouched frame and non-drop spindles.

#1058077 - 07/03/18 08:32 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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well I have the 17'' N90's . I really like the look on my car ( one retro thing I kind of kept) . I really need a wider rear like a 275 ( have a 255/40 NITTO 555 G2 on now) . So I started looking at having my rear wheels widen to safely fit a wider tire on it. the price is 250.00 a wheel and that is for 1 to 3'' on the back side. still cheaper than buying a whole new set of rims. THEN again I am planning on a frame notch / outer lip trim in the future as my car will be traction limited with the new engine / trans combo I just installed.

Last edited by axld; 07/03/18 08:35 AM.

86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . 255/45-17 Nitto 555 G2's. SO FAR..............lol.
#1058078 - 07/03/18 08:49 AM Re: Wheel for 86 SS questions [Re: BadSS]  
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Thrash86 Offline
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Originally Posted by BadSS
If you can hang with 17s, Summit has the Center Line Retro Legends in 17x8 (4.5" backspacing) and 17x9.5 (5" backspacing) on sale and may be some of the last ones available.

https://www.summitracing.com/search...d-wheels?autoview=SKU&ibanner=SREPD5


Funny I as looking at those yesterday. I was contemplating the 17's, but would like to go with 18". Thanks for looking out though; really like these wheels.

#1058079 - 07/03/18 08:52 AM Re: Wheel for 86 SS questions [Re: axld]  
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Originally Posted by axld
well I have the 17'' N90's . I really like the look on my car ( one retro thing I kind of kept) . I really need a wider rear like a 275 ( have a 255/40 NITTO 555 G2 on now) . So I started looking at having my rear wheels widen to safely fit a wider tire on it. the price is 250.00 a wheel and that is for 1 to 3'' on the back side. still cheaper than buying a whole new set of rims. THEN again I am planning on a frame notch / outer lip trim in the future as my car will be traction limited with the new engine / trans combo I just installed.


If they made N90's in 18x8/18x9 or 9.5" they'd be mine right now. Hell, even if they had a 17x9 for the rear I'd probably have to have them, and I can't be the only one that thinks this.

#1058083 - 07/03/18 05:53 PM Re: Wheel for 86 SS questions [Re: Thrash86]  
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Before I bought old school wheels, I thought about getting the N90s widened for about $200 each.

#1058088 - 07/03/18 06:46 PM Re: Wheel for 86 SS questions [Re: Thrash86]  
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200kSS Offline
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Glad to see I'm not the only one who's thought of (dreamed of) N90's in wider than 8 inches. I spoke to Kevin King (from Year One) about this and mentioned they would be made in a 3 piece version but not wider (this was a few years ago) and that never happened either.

I love the look of the 17 inch N90's on my SS, just wish they gave them the same options the honeycomb wheels get.


88 SS Black/Oxblood. Power Tour car
80 Malibu 2dr. Drag Week car
#1058123 - 07/06/18 03:00 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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Originally Posted by Thrash86
If they made N90's in 18x8/18x9 or 9.5" they'd be mine right now. Hell, even if they had a 17x9 for the rear I'd probably have to have them, and I can't be the only one that thinks this.


I've been more than discouraged lately trying to decide on wheels myself. I agree that the N90 is the perfect wheel for the Monte but like you I want a wider tire also. I've found myself trying to find a wheel that looks like it in an 18 but anything that comes close tops over $2K and I just don't want to come off the coin. The only set that comes in under a grand that'll take full advantage of my notched frame is the Torq Thrust IIs. It's not that I think they look bad on these cars, it's just I'm not that crazy about them, plus there are a ton of cars running them.

What I don't understand is why someone isn't making a plain flat five spoke in an 18" that doesn't cost an arm and a leg to fit our older cars. I'd love a set of these in an 18x8 and 18x10 (or even an 18x9.5). Billet Specialties used to make the Anthem that I COULD have bought for around $1300 that was close, but they discontinued it. Once I do find something, I'd going to go ahead and get them whether the car is ready to roll or not.

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#1058127 - 07/06/18 09:04 AM Re: Wheel for 86 SS questions [Re: BadSS]  
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Originally Posted by BadSS
The only set that comes in under a grand that'll take full advantage of my notched frame is the Torq Thrust IIs. It's not that I think they look bad on these cars, it's just I'm not that crazy about them, plus there are a ton of cars running them.


Agree 100%.

Originally Posted by BadSS

What I don't understand is why someone isn't making a plain flat five spoke in an 18" that doesn't cost an arm and a leg to fit our older cars. I'd love a set of these in an 18x8 and 18x10 (or even an 18x9.5). Billet Specialties used to make the Anthem that I COULD have bought for around $1300 that was close, but they discontinued it. Once I do find something, I'd going to go ahead and get them whether the car is ready to roll or not.

[Linked Image]


Yeah, a flat 5 spoke is what I want. Forgeline makes a nice one and CCW's are nice too (they also have a cool 5 spoke), but the prices are insane.

I honestly might have to just go with the N90's for now until I can afford a custom wheel. I know I won't be happy with torq thrust II's--or anything like that style--just so I can have the wider rear. For me, the look is more important than the width. 8" isn't THAT bad from pictures I see.

Last edited by Thrash86; 07/06/18 09:06 AM.
#1058226 - 07/12/18 12:34 AM Re: Wheel for 86 SS questions [Re: Thrash86]  
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Originally Posted by Thrash86
I honestly might have to just go with the N90's for now until I can afford a custom wheel. I know I won't be happy with torq thrust II's--or anything like that style--just so I can have the wider rear. For me, the look is more important than the width. 8" isn't THAT bad from pictures I see.


I'm trying to stick with a near level stance with enough tire to halfway hook on the street with what should be around 480-490RWHP (without the nitrous). If I could hook up with a 245/45/17 M&H drag radial or a Nitto NT555, 255/50ZR17, I'd have no problem running 8" N90s as I also think they're a perfect looking wheel.


Original owner of 1985 SS black hardtop w/gray interior. Frame-on restoration - 406 sleeper w/ heavily ported FIRST TPI. However the 1.875" headers, 3.5" duals, TH400, Ford 9", notched frame, and 10-point cage w/swing-out bars might tip you off it's not a lil' ole 305 TPI. Other mods: 2" drop, 18" wheels, f/r disk brakes, and custom stereo system.

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