Biggest Rims - Page 3 - HondaClub.com

**8695Beaters** · 12-20-2007, 10:01 PM

Big wheels hurt performance because of rotational weight, especially at the edges. The further something gets from the center of a circle, the harder it is to get moving (and stopping. Nobody mentioned that this will hurt your braking too). They are also harder to keep on the ground because they have more inertia, so every time they go up, they spend more time in the air then on the ground. Heavier wheels also wear parts out faster (like suspension bushings). Most lightweight wheels end at 17". Nobody makes light, forged wheels at 18".

trezmoc · 03-12-2008, 05:14 AM

low profile tyres increase handling i thought and surely the circumference of a tyre doesnt change regardless of rim size so how does it affect the acceleration?

**8695Beaters** · 03-12-2008, 05:46 AM

You are half right. Low profile tires help handling because the sidewall doesn't flex as much as on a thicker tire. But that doesn't mean that it's always a good thing. Look at F1 tires: they are about 3 or 4 inches thick in profile, but these cars pull 3gs of cornering force on almost every corner they hit. What makes more of a difference in grip is tread compund and tread design. Larger tread blocks don't deform and add grip, but are very loud for street use. Also, a soft compund tire has much more grip than a hard tire, but also wears out very quickly.

As for weight, think about it like this: what's heavier, metal, or air and rubber? In most cases, the tire is lighter than the wheel and by adding wheel, you are increasing the rotational weight on the wheel/tire. If you took your regular and spare tires, and tried giving them the same push, the spare tire would take off a lot faster and go farther. If your friend tried to stop them, he would have a harder time stopping the full tire over the spare. The same thing applies to your car. Weight is bad on any level for performance, but on wheels and tires, one pound of weight is equal to about 2 pounds of chassis weight.

91teggy · 04-04-2008, 10:36 PM

a larger wheel also increases the power needed to get the tire rotating against the centrifugal force. think of the wheel like a big gyro, the bigger it is the harder it is to move it from side to side so handling will decrease also.

**8695Beaters** · 04-12-2008, 10:14 PM

^^^That was the gist of my last post in case you didn't pick up on my analogy.

MugenEJ6AutoX · 05-11-2008, 07:07 PM

These are true racing rims, 15" inches and weigh about 9pds a peice. My rims weigh 13pds a pop, thats the min you can have in my SCCA class and are 15". to the guy who posted pics of his tires....**** dude 38 pounds a peice for tire + rim!!! Mine are wider than stock and weigh less than half that.

12-20-2007, 10:01 PM	#21 (permalink)
8695Beaters Geek In Training Join Date: Sep 2007 Posts: 887	Big wheels hurt performance because of rotational weight, especially at the edges. The further something gets from the center of a circle, the harder it is to get moving (and stopping. Nobody mentioned that this will hurt your braking too). They are also harder to keep on the ground because they have more inertia, so every time they go up, they spend more time in the air then on the ground. Heavier wheels also wear parts out faster (like suspension bushings). Most lightweight wheels end at 17". Nobody makes light, forged wheels at 18". Last edited by 8695Beaters; 01-03-2008 at 02:33 PM.

03-12-2008, 05:46 AM	#23 (permalink)
8695Beaters Geek In Training Join Date: Sep 2007 Posts: 887	You are half right. Low profile tires help handling because the sidewall doesn't flex as much as on a thicker tire. But that doesn't mean that it's always a good thing. Look at F1 tires: they are about 3 or 4 inches thick in profile, but these cars pull 3gs of cornering force on almost every corner they hit. What makes more of a difference in grip is tread compund and tread design. Larger tread blocks don't deform and add grip, but are very loud for street use. Also, a soft compund tire has much more grip than a hard tire, but also wears out very quickly. As for weight, think about it like this: what's heavier, metal, or air and rubber? In most cases, the tire is lighter than the wheel and by adding wheel, you are increasing the rotational weight on the wheel/tire. If you took your regular and spare tires, and tried giving them the same push, the spare tire would take off a lot faster and go farther. If your friend tried to stop them, he would have a harder time stopping the full tire over the spare. The same thing applies to your car. Weight is bad on any level for performance, but on wheels and tires, one pound of weight is equal to about 2 pounds of chassis weight. __________________ When life gives you lemons...you go racing!!! There is a fine line between hobby and mental illness. NASCAR fans are proof of this. So are competitiors in the 24 Hours Of Lemons.

04-12-2008, 10:14 PM	#25 (permalink)
8695Beaters Geek In Training Join Date: Sep 2007 Posts: 887	^^^That was the gist of my last post in case you didn't pick up on my analogy. __________________ When life gives you lemons...you go racing!!! There is a fine line between hobby and mental illness. NASCAR fans are proof of this. So are competitiors in the 24 Hours Of Lemons.

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03-12-2008, 05:14 AM	#22 (permalink)
trezmoc Junior Member Join Date: Mar 2008 Posts: 19	low profile tyres increase handling i thought and surely the circumference of a tyre doesnt change regardless of rim size so how does it affect the acceleration?

04-04-2008, 10:36 PM	#24 (permalink)
91teggy Junior Member Join Date: Apr 2008 Posts: 10	a larger wheel also increases the power needed to get the tire rotating against the centrifugal force. think of the wheel like a big gyro, the bigger it is the harder it is to move it from side to side so handling will decrease also.

05-11-2008, 07:07 PM	#26 (permalink)
MugenEJ6AutoX Honda's are addicting Join Date: Apr 2008 Posts: 116	These are true racing rims, 15" inches and weigh about 9pds a peice. My rims weigh 13pds a pop, thats the min you can have in my SCCA class and are 15". to the guy who posted pics of his tires....**** dude 38 pounds a peice for tire + rim!!! Mine are wider than stock and weigh less than half that.