So you want raised white letters on your GTP, Herc? You sure thats gonna look right??

With the Daytona Pace car Edition I think the raised white lettering would look good.

I saw a white GTP with the Goodyear NASCAR tires, raised white lettering. It looked real good with those tires.

yep, and thats all tose nascar goodyears are good for, is lookin good , at least thats what the goodyear dealer told me. he said i would be better buying any other goodyear tire,even the RSA` s that originally came with my GTP. and them bitch`s didnt last more the 40k, alright 40089 miles but whos counting!!!!
when your upside down .

No. It's ten pounds of unsprung weight or 100 pounds of sprung weight. Unsprung=tires, rotors, calipers. Sprung=seats, spare tire, etc..
Jack
BTW was my post that vague?

Herc , if your lookin for decent white letter tires try dunlop qualifier gt's reasonable price and a nice footprint .

thanks

I went back and reread your post. I guess I got into the "sprung" weight thought process and wasn't thinking "unsprung". You did mention that you were talking "unsprung" though. Sorry.

I haven't read much regarding how tire/rim and rotational mass based on over-all size (regardless of weight), effects performance. I realize that mass and demension have an effect... I just don't know to what degree. It's a little more complicated than "sprung" weight issue.

Marc

Warning: Possible stupid question ahead...

How is removing 10lbs of brake calipers (unsprung) different from removing 10lbs of interior items (sprung)???

Maybe not calipers. But rotors, tires, axles, and driveshaft are all rotational mass. The lighter they are, the quicker the engine can spin them up to speed. The heavier they are, the harder the engine has to work.
Jack

A bit of physics is involved. It's not just 10 pounds here or there. When you start rotating an object the faster you spin it the greater the "G" loading is so theoreticly that 10 pounds will feel like 100 pounds to the motor.

I`m with JackO I think that the sprung, unsprung theory is caca, the biggest diference is made by the weight of rotational elements, if you dont believe me the do the following, grab the front wheel of a racing bike (thin tire) by its axle (meaning take it off the bike, ask someone to spin it for you, then try to move it sideways, you will feel a force, that will try to stop you from moving either direction, now try to do the same with a heavier wheel , say a mountain bike, you will definatelly feel a lot more resistance to move in either direction & it will take a slightly greater force to get that wheel moving... I learned that in aviation school, don`t remember the name of that force now,,,(it`s being 7 years since I when to school) it`s either centrifugal or centripital.

I get it now. I wasn't thinking about the rotational forces, I was only thinking strictly on weight.

I don't like physics. I changed my major from Computer Engineering to CIS so I didn't have to take physics.

Actual unsprung weight will affect corner carving.

Just purchased some BFG ZR4 Comp T/A's. They seem to get excellent traction and hardly give while cornering. Not sure if they come in 18's or not, but they only cost around $120. the only downfall so far is the noise. They are a lot louder than the Pirelli's i had before.