I think it is fair to say that two tires, all things being the same, but one being one size wider, will have the wider tire creating more rolling resistance. [/b][/quote]
Sorry I didn't cover all bases. Inflated tires roll better than flat ones, etc.

 

Sorry I didn't cover all bases. Inflated tires roll better than flat ones, etc.[/b][/quote]
I think you learned somthing important in your senior design project, that is what I call "decision making by data". In this forum, we expouse ideas about vehicles we know very little about. Your point about backing up an argument by data is valid.

 

you dont know?! theyre coming on the sub $20,000 v-8!

just reviving an old myth of the sub 20k v8 [/b][/quote]
and we all know the V-8 is gonna be under $20k because the pricing comes out on Monday.

 

I saw a 93 Lx HO today with 275/ 17 on the rear looked like they cleared good, and what i seen in how the rear quarter panels on the 05 I would say you could get 275s on there easily.

 

Well regardless of what is available when the car is released I will end up putting 18's on it, for the look of course and most likely 265/35's on the rear and 245/40's on the front

 

Very true, but if the tires listed by C & D are what actually comes on the car, the manufacturers are very different therefore making any claims that a P235 Pirelli has less rolling resistance than a P255 BFGoodrich is moot. BFG (owned by Michelin) spends obscene amounts of money trying to lessen rolling resistance. Not to start a complete pissing match, just making a point. But yes, all things the same, the wider tire makes more resistance.

Pirelli, P235/55WR-17;

opt GT,
BFGoodrich g-Force T/A KDW2, P255/45ZR-18

 

Some guys with Cobra's have 275s on a 17x8
I think thats as WIDE as you can go.

On a 9 inch wide rim, the lowest you'd want is a 255.
Although some guys have been said to put 245s on them...I wouldn't risk it. [/b][/quote]
Nope, some of my buddies go as wide as 315's out back!!!

 

You can buy 10.5 inch wide rims now for the current car for the rear I think the same will go for the new car, the quarter panels on the 05 I saw were made with not much lip .

 

Yeah, me too. I think the 18's look like rubber coated rims. Plus the 18's don't ride as well since there's less sidewall to absorb road bumps. [/b][/quote]
Maybe not as well, but (as one announcer in the 05 pony drive vid with the car loading onto the trailer put it) that the car was designed for a larger rim + tire because asthetically, it looked better. However, these rims would be available within a year of the launch. I agree with him also. The 17's look good, but there is a lot more sidewall on the 05 than the 99+.

I bet you that even with 18's there is enough sidewall to allow for a comforable ride. As well, there is an improved chasis + suspension.....so even with 18's it will ride much nicer than the current car.

My point is, buy 17's more for look than purpose.

 

Does anybody know a good web site to price tires and rims???

 

Try Tirerack.com