now this will be down the road a bit, but for when the time comes for me to upgrade my stock 15 hubs, im looking for some more traction (wider). Correct me if im wrong, but a 18x8 would fit the LS, right? or is 18x7.5 the widest i can go?

also, on tire sizes, i dont have a clue what 225/40HR18 means....can anyone give me a breakdown on what all those numbers and letters represent?

 

I've got 18x7.5's (with 215/35-18 tires) and have had no problem whatsoever with rubbing, and I'm guessing 18x8 would probably be okay, too. My 18x7.5 with 215/35-18 tires give plenty of traction (it's a night and day difference vs. stock), and I am completely happy with them. These tires are 2 cm wider than the tires on our stock steelies were, and if that's not enough, you could go with 225 (like in your example), which is 3 cm wider than stock.

As far as the 225/40HR18 goes, 225 is the section width (tread width) in millimeters, 18 is the wheel diameter in inches, HR is the inner construction of the tire (the R means that the tire is a radial), and 40 is the sidewall height (as a ratio to the section width--so 40 would mean that the sidewall is 40% of the section width, or 225 x 40% = 90 millimeters tall). Sometimes, you'll see additional numbers, such as 215/35ZR18 84W. These last numbers indicate the load and speed ratings of the tire, where 84 is the load rating, and W is the speed rating (go here to see the different load and speed ratings), and the speed rating is the letter, 'W' in this case.

Here's a good link that describes all of the above in a little more detail. Click here.

 

thanks man...thanks a lot