wheels
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hi guys, i need some info. how does wheel size affect the performance of a car? as in does having larger rims and tyres fitted to the car improve FC or acceleration or grip, etc..
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Larger rims and wheels would mean improved stability, increased FC and decreased acceleration.
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how can larger rims give u more stability?Originally posted by parryhotter:Larger rims and wheels would mean improved stability, increased FC and decreased acceleration. -
more precise steering too!
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I think he mean by the width eg,6.5J upgrade to 7JOriginally posted by tailslide:how can larger rims give u more stability?
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But do take not of ur car model n do not try put in oversived rims as they might cause ur odo or speedo to b inaccurate
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here' my thumb of rule. always keep the overall wheel size (that means the diameter of the wheel including both tyre and rim) the same. the only other consideration here is the weight of the rim u're changing to.Originally posted by F[r]0sTy:hi guys, i need some info. how does wheel size affect the performance of a car? as in does having larger rims and tyres fitted to the car improve FC or acceleration or grip, etc.. -
i think he means with larger rims, u'll put on lower profiled tyres. with stiffer and thinner sidewalls (the xyz/45 part), there is less sidewall flex and that helps with handling.Originally posted by tailslide:how can larger rims give u more stability?
of course, the width of the rim (the 225/xy part), if larger, allows for a larger contact patch with the ground so that helps as well bah. just that he didn't elaborate on it. -
Thanks for walking the extra miles, sirlee and Heng@
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no prob.Originally posted by parryhotter:Thanks for walking the extra miles, sirlee and Heng@ 
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Well said! I didn't know that.Originally posted by HENG@:i think he means with larger rims, u'll put on lower profiled tyres. with stiffer and thinner sidewalls (the xyz/45 part), there is less sidewall flex and that helps with handling......
My share: Wider wheel might sometime cause eye sore of the TPs, wheels perturbing from the side of the car. Or it could seriously cause damages to the inner side of the body when doing a hard-corner. Experiences from a small car family.
The increase in performance is also coupled with the lose of comfort. Just like installation of sport spring/suspension. -
if ur wheels protude outside, it isn't due to ur tires being too wide. its when u chose the wrong friggin offset for ur rims. u should slap the head of the tire shop owner who sold u this rim if he doesn't know what is the correct offset of the rim u should be using.Originally posted by wbucket:Well said! I didn't know that.
My share: Wider wheel might sometime cause eye sore of the TPs, wheels perturbing from the side of the car. Or it could seriously cause damages to the inner side of the body when doing a hard-corner. Experiences from a small car family.
The increase in performance is also coupled with the lose of comfort. Just like installation of sport spring/suspension.
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yes, the above holds true if the time the wheel stays on the ground is constant.Originally posted by HENG@:i think he means with larger rims, u'll put on lower profiled tyres. with stiffer and thinner sidewalls (the xyz/45 part), there is less sidewall flex and that helps with handling.
of course, the width of the rim (the 225/xy part), if larger, allows for a larger contact patch with the ground so that helps as well bah. just that he didn't elaborate on it.
a larger wheel will have larger inertial mass (we all know that already i suppose ) this not only adds rolling resistance, but also, being unsprung mass, resistance to ur suspension system.
under any given road condition, the suspension will need to keep the wheels in contact with the ground using the rebound rate of the shocks as it goes through undulating road conditions (face it, we dun have sepang tarmac quality). now, the rebound on stock suspension systems cannot be adjusted. imagine, it would be much easier for a suspension system to control the oscillation of a lighter object then that of a heavier one. the danger here is when one wheel loses contact with the tarmac, a larger rim will take a longer time to recover its equilibrium compared to a lighter (smaller rim).
now, the larger contact patch won't make a diff if this happens.
i dun recommend upsizing ur rims unless u are seriously opting for lighter (and more expensive) forged rims or have upgraded ur suspension to some aftermarket ones with adjustable rebound. -
u're referring to how with larger rims, the ride often becomes crashier?Originally posted by tailslide:yes, the above holds true if the time the wheel stays on the ground is constant.
a larger wheel will have larger inertial mass (we all know that already i suppose ) this not only adds rolling resistance, but also, being unsprung mass, resistance to ur suspension system.
under any given road condition, the suspension will need to keep the wheels in contact with the ground using the rebound rate of the shocks as it goes through undulating road conditions (face it, we dun have sepang tarmac quality). now, the rebound on stock suspension systems cannot be adjusted. imagine, it would be much easier for a suspension system to control the oscillation of a lighter object then that of a heavier one. the danger here is when one wheel loses contact with the tarmac, a larger rim will take a longer time to recover its equilibrium compared to a lighter (smaller rim).
now, the larger contact patch won't make a diff if this happens.
i dun recommend upsizing ur rims unless u are seriously opting for lighter (and more expensive) forged rims or have upgraded ur suspension to some aftermarket ones with adjustable rebound.
somehow hor, when u talk about bouncing n rebounding, i kenna reminded of boobs bouncing up n down.
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should c lots of those in the uk clubs watOriginally posted by HENG@:u're referring to how with larger rims, the ride often becomes crashier?
somehow hor, when u talk about bouncing n rebounding, i kenna reminded of boobs bouncing up n down.
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true. true.Originally posted by tailslide:should c lots of those in the uk clubs wat 
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WOOHOO!!!
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start the truck and make the boys go SPLAT!
