[spookyzeus]

Hi all,
So I'm thinking about the idea of changing to the HRE FF01 wheels but I'm a little worried about the impact of the extra weight.
For all those that have changed to slightly heavier wheels what is the impact to ride/performance like?
Many thanks

[alscks0414]

Originally Posted by spookyzeus

Hi all,
So I'm thinking about the idea of changing to the HRE FF01 wheels but I'm a little worried about the impact of the extra weight.
For all those that have changed to slightly heavier wheels what is the impact to ride/performance like?
Many thanks

FF04 and FF01 around the same weighs;
19': 22.4 lbs Front/ 22.6 lbs Rear
20': 23.8 lbs Front/ 24.6 lbs Rear

437M
19': 23 lbs front/ 23.37 lbs rear

If you are considering 19' they are lighter than stock 437M.

Weight should be considered along with tire weight.
If you are considering fitting the same tires, then mind only wheel weight.

Rotational force and inertia becomes very huge even there is 2 lbs different in front (both right and left) when you are comparing heavier and lighter tires.

I dont want to go too deep into physics class and you can find those on youtube easily.

Here is the one example of weight of front (7.5 lbs per a wheel+tire set) and the rear (7 lbs per a wheel+tire set) bringing huge difference in acceleration high MPH pull + breaking distance.



We are not talking about 7.5 lbs difference (unless you are looking at changing 20' wheels with wider aggressive setup). But 1~2 lbs still will contribute to difference that your buttdyno will be able to tell such difference.

Edit*: Picture only shows the straight line figures but cornering will be affected as much as straight dragstrip.

[spookyzeus]

Originally Posted by alscks0414

FF04 and FF01 around the same weighs;
19': 22.4 lbs Front/ 22.6 lbs Rear
20': 23.8 lbs Front/ 24.6 lbs Rear

437M
19': 23 lbs front/ 23.37 lbs rear

If you are considering 19' they are lighter than stock 437M.

Weight should be considered along with tire weight.
If you are considering fitting the same tires, then mind only wheel weight.

Rotational force and inertia becomes very huge even there is 2 lbs different in front (both right and left) when you are comparing heavier and lighter tires.

I dont want to go too deep into physics class and you can find those on youtube easily.

Here is the one example of weight of front (7.5 lbs per a wheel+tire set) and the rear (7 lbs per a wheel+tire set) bringing huge difference in acceleration high MPH pull + breaking distance.

Attachment 1803306

We are not talking about 7.5 lbs difference (unless you are looking at changing 20' wheels with wider aggressive setup). But 1~2 lbs still will contribute to difference that your buttdyno will be able to tell such difference.

Edit*: Picture only shows the straight line figures but cornering will be affected as much as straight dragstrip.

Many thanks for the input/info
Interesting maybe I had the wrong information, i had the OEM weights as :
Front 19x9 21.1lbs
Back 19x10 22.7lbs
Corrected/ Checked - Front 21.9lbs, Rear 22.5lbs

Plus i then had the HRS coming in at:
Front 19x9 23.8lbs Corrected/ Checked - 23.4lbs
Back 19x10 24.40lbs Corrected/ Checked - 24.5lbs

Hence i thought slightly more weight to them
Will double check the figures
Thanks

[Gotulukn]

Originally Posted by spookyzeus

Many thanks for the input/info
Interesting maybe I had the wrong information, i had the OEM weights as :
Front 19x9 21.1lbs
Back 19x10 22.7lbs
Corrected/ Checked - Front 21.9lbs, Rear 22.5lbs

Plus i then had the HRS coming in at:
Front 19x9 23.8lbs Corrected/ Checked - 23.4lbs
Back 19x10 24.40lbs Corrected/ Checked - 24.5lbs

Hence i thought slightly more weight to them
Will double check the figures
Thanks

I'm about to make a purchase on FF01 19x9 and 19x10 for my f83, and now im kind of disgusted that these "lightweight" aluminum wheels weigh MORE than my oem 437m's!!!

[Ratcher]

Originally Posted by Gotulukn

I'm about to make a purchase on FF01 19x9 and 19x10 for my f83, and now im kind of disgusted that these "lightweight" aluminum wheels weigh MORE than my oem 437m's!!!

Where do they call these wheels "lightweight"? In comparison to their forged wheels these are very heavy.

[M3SQRD]

Originally Posted by Gotulukn

I'm about to make a purchase on FF01 19x9 and 19x10 for my f83, and now im kind of disgusted that these "lightweight" aluminum wheels weigh MORE than my oem 437m's!!!

HRE does not market their FF wheels as being lightweight. Their FF wheels weigh what a typical flow forged wheel weighs (+/-1 lbs or so based on design differences). Their FF wheels are made by Enkei (still believe this is true?) so it has good strength and quality for flow forged. I have a set of FF15 which were used for three years without issue. However, get a set of their R101LW forged monoblock wheels (17 lbs for 19” diameter) if you’re concerned about wheel weight. I noticed a huge difference between unsprung weight and steering response with my 19” R101LW vs 18” 513M. FF15 had a much smaller change between them and the 513M, not enough to impact ride quality or steering differences (which will go unnoticed between the FF01 and 437M.

[thetastelingers]

I inquired to HRE about the FF01 for my car before I ordered Apex and they replied and said they didn't make FF01 to fit the M2. I didn't argue with them, because I have seen FF01 wheels on an M2. They lost a sale with that though.