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67motorcat · 11-04-2011, 06:07 PM

Good point on the tire sizing...

My question is I have heard that some guys are using the T155-80 tire that is (27.8") in Dia.

This is much closer to the 28.7 Dia. of the OEM tire Dia.

The above tire is a little larger than the T145-80 tire some guys use.

The T155-70 (26.5") Dia. tire it what GM offers and seems a bit to small( over 2" Dia.difference)

So,will the T155-80 tire(the Largest) fit in the trunk with the cover installed?

This is the one I would rather have in case I have a flat at the rear and don't want to hassle swapping to the front.
.9" difference from the OEM size won't matter for the posi rear.

by the way,the part # for the GM donut wheel is #92230888

11-04-2011, 06:07 PM	#24
67motorcat Blown Cool Breeze Drives: 2011 Black on Black 2SS M6 Join Date: Jul 2010 Location: Pinehurst NC Posts: 1,027 View My Garage	Good point on the tire sizing... My question is I have heard that some guys are using the T155-80 tire that is (27.8") in Dia. This is much closer to the 28.7 Dia. of the OEM tire Dia. The above tire is a little larger than the T145-80 tire some guys use. The T155-70 (26.5") Dia. tire it what GM offers and seems a bit to small( over 2" Dia.difference) So,will the T155-80 tire(the Largest) fit in the trunk with the cover installed? This is the one I would rather have in case I have a flat at the rear and don't want to hassle swapping to the front. .9" difference from the OEM size won't matter for the posi rear. by the way,the part # for the GM donut wheel is #92230888 __________________ 2011 Black on Black 2SS M6 Had a 2010 IBM 2SS M6 Enjoy life.Think of all the women on the Titanic who passed up dessert.