AC type IV rims

[morgan]

18" looks more likely trendy nowadays all sifus please all help out on my thread!!! Thanks

 

[Spaceman]

this is it... ACS original Type IV 18"

 

[Spaceman]

my next mod. yahooo....not too big not too small....just right! not too bumpy on 18" unlike 19". Will put on some Michelin PS2...

 

[E46 2.2]

Originally posted by Spaceman@Apr 16 2006, 11:10 PM
This is it... ACS original Type IV 18"

Spaceman,

Type IV 18" ori RM?

Type IV 18" replica RM?

 

[Mouse]

I think ori AC IV 18' is somewhere around 8-10K, replica cost around RM 2600

 

[leakwoon]

bro tikus

not yet got ur rim rim bling bling ??

 

[Mouse]

HM2 225/45/17

 

[leakwoon]

wahh

HM hmmm

post sum pic pls

 

[E46 2.2]

Originally posted by Mouse@Apr 17 2006, 07:45 AM
I think ori AC IV 18' is somewhere around 8-10K, replica cost around RM 2600

Mouse,

TQ for the info

 

[eddie]

Originally posted by leakwoon@Apr 7 2006, 08:36 PM
hehehe i can touched 180km/h effortless


feel the car still can go lo


but if not mistaken from my stock 15" to 18" now

at 180 should be about 200+++ liao

correct me if i m wrong

yes, meter error sometimes occurs....some guys get plus minus 8%

 

[The Necessary]

Leakwoon,

you'll only get significant error if your new set of tyres + rims are larger or smaller in total diameter than your original set. This should not occur if you followed the reccommended tyre sizes for the rim size you're using.

Don't forget; bigger rims do slow your car down, and not the other way around.

 

[leakwoon]

big bro nec

u mean error reading on speedo meter?


pls advise

 

[The Necessary]

Yeah, speedo error.

Hence you should always follow the tyre sizes that are given in your driver's manual or imprinted on the side of the driver's door sill (where the tyre pressure info is).

If your tyres sizes are that of which BMW reccommended, your 180km/h IS 180km/h. Welcome to the world of performance sapping bigger wheels.

 

[scin]

Originally posted by The Necessary@Apr 18 2006, 02:15 AM
Don't forget; bigger rims do slow your car down, and not the other way around.

Does this apply to the accelaration only or the top speed as well?

Is that because of greater rolling resistance or the added weight??

If the overall diameter of wheel+tire is greater than stock, would that mean that the distance covered per revolution is therefore greater than the standard wheel/tire combo thus resulting in a higher speed for the given RPM? or does it not work that way?? I am confused.....

Larger overall diameter will affect the acceleration coz of the increased rolling resistance right?

 

[The Necessary]

Both, and it will be a factor of the 2 (increased weight and rolling resistance) that contributes to it, especially since no one seems able to increase rim diameter, yet keep tyres widths the same.

Let's not forget that rim/tyres/wheels are part of rotational and un-sprung mass, which according to whom you believe, can equal anything from 3 times to 7 times that of static mass.

If the overall diameter is great than stock, what you would get is speedo error- since speedos read your speed off your ABS sensors, which measure how many revolutions your wheels are doing. It's the same as you saying that for a given RPM, speeds will be faster, but the speedo will read a lower speed (due to less number of revolutions).

 

[leakwoon]

hmmm

great info

thanks BIG BRO NEC

 

[scin]

Originally posted by The Necessary@Apr 18 2006, 10:26 AM
Both, and it will be a factor of the 2 (increased weight and rolling resistance) that contributes to it, especially since no one seems able to increase rim diameter, yet keep tyres widths the same.

So, in otherwords... the additional rolling resistance comes more from the increased width of the tire section, rather than the overall diameter of the wheel+tire...

Capisco!