i was wondering what the difference between these two? my car is a base 05 z and wondering it the price difference is worth it?

 

sidewall height = 275mm x 30 percent or 82.50mm

sidewall height = 275mm x 35 percent or 96.25mm

 

A 275/30 will look stupid the sidewall is to small.

But essentially the 2nd number in the tire size is the sidewall % based off the width. So the sidewall in a 275/30 is 30% as tall as it is wide. A sidewall in a 275/35 will be 35% of the width. In this case the 275/30 has a very small sidewall it will look dumb.

 

Definitely don't go with a 275/30 tire. If you're getting 19" wheels, I'd go with 275/35/19 tires.

 

Don't forget that the series of tire does not always dictate height. The total width of the rim will also dictate how high a 30 series vs. a 35 series sits. For example, a 275/30 may have comparible tire height when mounted on a 10inch wide rim vs. a 275/35 on a 10.5 inch wide rim.

 

the 35

 

is the car going to be lobsided? the 275/30/19 in the rear means it will be lower in in the rear that its suppose to be be. but till the front be higher than the rear? granted the 275/30/19 will look stupid but will it cause any problems with the computer or any performance problem in comparison to the reccomended 275/35/19?