Just wondering what 87-91 owners with 17" rims are using re tire size. I want to get the best size that will fill the wheelwell without rubbing and still be a common size so its not too expensive.

What about 225/50/17?

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1989 Oldsmobile 88 Royale Brougham Regency - Grey on Grey - FE3 - X06 Package - Limo Tint - Clarion HU - 2K Pontiac Grand Am 15" Alloy Rims

stock 17's for bonneville come with 235/55/17........

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-Juan

No bonnie!
93 s10 ex cab: 2.8: t5: exhaust: tbi mods. 5.3, 76mm, and a D.r cam on a stand

Open this link up http://www.miata.net/garage/tirecalc.html

Put your stock size on one side, then put your new rim size on the other side. From there, you can play around with the width and aspect ratio to see what size tire you need.

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Ryan

2003 Bonneville SSEi - The Black Mirror SOLD!
2002 Bonneville SE - The Mutt Complete 2004 SLE interior, drivetrain, and body harness swap, ECC swap, HUD swap, black GXP wheels, GXP headlights and tinted tails - SOLD
2003 BMW 540i M Sport, 2001 BMW X5 4.4i, 2010 GMC Acadia, 2017 Grand Design Imagine 3150BH
1982 Cutlass Supreme - The fun one

225/50/17 is going to be a pretty small tire. Its even smaller than the 225/60/16 that comes stock on almost every Bonneville.

Play around with this tire size calculator: http://www.miata.net/garage/tirecalc.html

I would base your size off the 225/60/16's that generally come on the 92-99 Bonneville, not the 235/55/17 that come on the 00+, since the 235/55/17 are bigger.

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Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 95k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 260k | Official Bonneville Hauler

Moved to Detailing & Appearance

_________________
Ryan

2003 Bonneville SSEi - The Black Mirror SOLD!
2002 Bonneville SE - The Mutt Complete 2004 SLE interior, drivetrain, and body harness swap, ECC swap, HUD swap, black GXP wheels, GXP headlights and tinted tails - SOLD
2003 BMW 540i M Sport, 2001 BMW X5 4.4i, 2010 GMC Acadia, 2017 Grand Design Imagine 3150BH
1982 Cutlass Supreme - The fun one

Got the rims today. They are actually 16" x 6.5" so after looking at the tire calculator I am thinking either 225/55/16 or 215/60/16. There seems to be an issue with the strut plate being hit by a larger tire like 235 on the 87-90 Cars as theres not much clearance like on the newer ones.

What tires are 87-90 owners on here running with their 16" rims? Were'nt the 88-90 sse's rims 16" and if so what is the stock tire size?

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1989 Oldsmobile 88 Royale Brougham Regency - Grey on Grey - FE3 - X06 Package - Limo Tint - Clarion HU - 2K Pontiac Grand Am 15" Alloy Rims

225/60/R16 is about the most common tire size ever. All Bonneville's with 16's run that.

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 95k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 260k | Official Bonneville Hauler

After having the Olds Delta 88 off the road for quite awhile I am finally putting it back on the road and need new tires n rims. The Wheels I picked up ages ago were what I thought to be Grand Am 16" but are in fact Grand Prix with an ET of 52mm which I think is too much for the 89 Delta 88.

Whats the stock offset for the 87-91? 40mm?
Whats the biggest offset that will fit? I saw some 92-99 wheels cheap that are 46mm offset but don't know if these will fit without rubbing as the 87-89 are close to the struts as it is.

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1989 Oldsmobile 88 Royale Brougham Regency - Grey on Grey - FE3 - X06 Package - Limo Tint - Clarion HU - 2K Pontiac Grand Am 15" Alloy Rims