Impala ss tire size on Buick roadmaster - Chevy Impala SS Forum
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post #1 of 11 (permalink) Old 07-08-2012, 09:21 AM Thread Starter
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Impala ss tire size on Buick roadmaster

Hi, I just inherited a 92 Buick roadmaster that needs some attention, it looks like it has the original tires on it which are very dry rotted , i want to replace them with impala ss 17 inch wheels and tires, my question is will the stock impala ss tire size fit with no rub or should I use something else? Having the widest tire is not important to me ,I just want something that fits and rides good.
Thanks Pete m
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post #2 of 11 (permalink) Old 07-08-2012, 09:43 AM
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They fit just fine in the stock size. Welcome to the forum now post some pics.


'94 Jadestone Metallic RMW
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post #3 of 11 (permalink) Old 07-08-2012, 01:10 PM
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Depending on the diameter of the Impala tires (I believe they are 27 instead oif 28) you may have to put a different driven gear in the VSS so that your speedo is reasonably correct. You will have to do the calculation based on the gear ratio and the driven gear in the car. A local speedometer shop should be able to fix it for you. The other option is to put 28 inch tires on the Impala rims. They will still fit under the fenders. It is probably easier to put the larger diameter tires on the car.

1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html
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post #4 of 11 (permalink) Old 07-12-2012, 01:16 AM
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The SS wheels and tires work fine on a 92 RMS, Ive had em on mine for years. Had my speedo checked after they were put on and it wasnt off but a couple mph. SS wheels are a great upgrade on Roadmasters!!

1992 Roadmaster Sedan. "Gertrude" She's the only girl thats stayed with me!
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post #5 of 11 (permalink) Old 07-12-2012, 06:53 AM Thread Starter
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Thanks everyone, I got the rims , i forgot to mention it has rear drums if it makes a differance,I will start looking for some rubber next week, and put up some pics after I give it a bath.
Pete m
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post #6 of 11 (permalink) Old 07-13-2012, 05:59 PM
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Drums on mine too, made no difference at all. Got decals for the center caps that are the Buick shields from a forum member named Maximuss. looks awesome IMHO.

1992 Roadmaster Sedan. "Gertrude" She's the only girl thats stayed with me!
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post #7 of 11 (permalink) Old 08-10-2012, 10:12 PM Thread Starter
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Quote:
Originally Posted by Fred Kiehl View Post
The other option is to put 28 inch tires on the Impala rims. They will still fit under the fenders. It is probably easier to put the larger diameter tires on the car.
Do you know what the best or closest size to factory tire dimensions in 28 inch would be?
I got her cleaned up and the a/c working last week now anxious to start driving around .
Thanks a lot , Pete m
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post #8 of 11 (permalink) Old 08-11-2012, 12:30 AM
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A 235-60-17 just happens to be a 28 inch tire. I may put a smaller tire on the front to keep them from hitting the bodywork. I have 215-70-15s on the front right now, and they are not really happy (I have drop spindles, and they move the tire out about 1/2 inch, and the lowering springs also cause a 1/8 inch move outward as well, because of the angle of the lower arm).

1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html

Last edited by Fred Kiehl; 08-11-2012 at 12:35 AM.
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post #9 of 11 (permalink) Old 08-20-2012, 07:39 PM Thread Starter
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Making some progress,got the wheels on today but need to get the correct lug nuts before I drive it, I wish I took a before pic. So far ,repaired 2 window trac rollers,converted ac to 134a, need to find a rear window switch and replace scratched windshield.
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post #10 of 11 (permalink) Old 08-20-2012, 09:33 PM
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Check the rear window switch for why it is not working. The paddle may be broken. The paddles are easy to replace. The rear window switches are the same as the passenger's side front window switch. You can remove them from the bezel, and just replace the switch.

1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html
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