18 inch rims
07-14-2004, 01:05 PM
#11
Senior Member
True Car Nut
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Likes: 0
Received 1 Like
on
1 Post
Originally Posted by Nytro67
going from stock 60/16s to 245/18s is only a millimeter different. there is no loss of acceleration b/c of increased mass. the radius from the center of the hub to where the tire meets the ground is still the same size. you would lose acceleration if you ran a larger tire size but then also your speedometer would be off and you would have to get your PCM reprogrammed for it to work correctly and you amy have problems with rubbing in your wheel well.
There may be slightly more road feel but thats what i want when driving a sports car.
it handles much better around turns as there is not as much rubber folding under plus i went from 225s to 245s wich helps. i never leave the performance mode for suspension anyway. If i want a comfortable ride, i can still switch to normal mode and it floats like a boat.
i think the bonnes look phat with 18s on them.
There may be slightly more road feel but thats what i want when driving a sports car.
it handles much better around turns as there is not as much rubber folding under plus i went from 225s to 245s wich helps. i never leave the performance mode for suspension anyway. If i want a comfortable ride, i can still switch to normal mode and it floats like a boat. i think the bonnes look phat with 18s on them.
07-14-2004, 01:28 PM
#13
Senior Member
Posts like a Turbo
Join Date: Apr 2003
Location: Central Maryland
Posts: 463
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Rogue
You lose acceleration due to the higher rotating mass beause you have more rim. Unless you got super light 18'* that weighed less than your previous size your going to lose acceleration.
So we should say that going to a heavier rim will slow you not larger. My 18'* are almost 2 pounds lighter then my 16s. those gold diamond lace wheels are very solid. my new wheels hardly have anything in the middle.
And if you think of it in that respect, having my golf clubs or a second passenger in the car slows me down. My audio system, the dead bodies in my trunk, etc...
07-14-2004, 01:30 PM
#14
Senior Member
True Car Nut
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Likes: 0
Received 1 Like
on
1 Post
Originally Posted by Nytro67
Originally Posted by Rogue
You lose acceleration due to the higher rotating mass beause you have more rim. Unless you got super light 18'* that weighed less than your previous size your going to lose acceleration.
So we should say that going to a heavier rim will slow you not larger. My 18'* are almost 2 pounds lighter then my 16s. those gold diamond lace wheels are very solid. my new wheels hardly have anything in the middle.
And if you think of it in that respect, having my golf clubs or a second passenger in the car slows me down. My audio system, the dead bodies in my trunk, etc...
07-14-2004, 01:44 PM
#15
Senior Member
Posts like a Turbo
Join Date: Apr 2003
Location: Central Maryland
Posts: 463
Likes: 0
Received 0 Likes
on
0 Posts
so your saying that the tire, which is 15 mm shorter than stock and lighter, makes no difference in the rotating mass, only the wheel? and although my wheels themselves are lighter then my stock 16s, i'm still gonna be slower? i would like to trust you but i would need to see it in a formula to believe it. in which case, i would have to weigh a tire and a wheel seperately then mounted from each set to plug into the formula which sounds entirely like too much work. 
07-14-2004, 02:13 PM
#16
Senior Member
True Car Nut
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Likes: 0
Received 1 Like
on
1 Post
Originally Posted by Nytro67
so your saying that the tire, which is 15 mm shorter than stock and lighter, makes no difference in the rotating mass, only the wheel? and although my wheels themselves are lighter then my stock 16s, i'm still gonna be slower? i would like to trust you but i would need to see it in a formula to believe it. in which case, i would have to weigh a tire and a wheel seperately then mounted from each set to plug into the formula which sounds entirely like too much work.
07-14-2004, 02:44 PM
#17
Senior Member
True Car Nut
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Likes: 0
Received 0 Likes
on
0 Posts
The wheel itself makes more of a difference than the tire. Ever see a launch in slo-mo? The rotating mass is the wheel. The tire gives much more, thus transferring some of the power back to the rim. Why do you think dragsters have 15" rims and more rubber?
07-14-2004, 04:46 PM
#20
Senior Member
Certified Car Nut
North American Misconception = Sports cars need a jarring stiff ride to turn well.
No, you can have a car that can just FLY in corners and still be comfy.
18'* will make your ride stiffer, you might gain some handling, at the expense of acceleration, and braking. You really should upgrade something on the stoppers if going to 18+.
No, you can have a car that can just FLY in corners and still be comfy.
18'* will make your ride stiffer, you might gain some handling, at the expense of acceleration, and braking. You really should upgrade something on the stoppers if going to 18+.