M5 343 wheels with PS4S installed on 650iX GC

[Qsilver7]

Originally Posted by gordonc

Thanks for the advice both. I looked at WillThey Fit; result: "Compared to your existing wheel, this new wheel will have an inner rim which is 5.4mm closer to the suspension strut. The outer rim will poke out 7.4mm more than before".
These measurements don't "feel" excessive; will give it a go...

Thanks again

Good luck...hope it all works out in your favor and to your liking.

[jjasonSU]

Originally Posted by socal28

Yeah, I know. At least the rim is not further out than the tire.

It looks good, you have enough sidewall height. Just use your mirrors/sensors and you'll be fine.

[Athan 640D]

Originally Posted by socal28

Finally got around to upgrading the OEM 19" wheels/tires with the F10 M5 343 20" wheels and Michelin Pilot Sport 4S tires.
The tires sizes I went with are F: 245/40-20 and R: 275/35-20.

Several reasons I went with these sizes.
1. Wanted a bit more sidewall for comfort and road rim protection.
2. Got a great deal on the 245/40-20 tires.
3. These sizes are OEM equipped on 7-series and new 6-series GT models. (There's got to be some assurance if BMW opts for these sizes.)
4. Speedo was off ~2 MPH slower with the original setup (compared to GPS Waze speedo). With taller diameter, the speedo is now about .5-1 mph faster. Yes, probably safer to read faster than actual though.
5. Felt that the 255/35-20 & 295/30-20 option were going to be a bit too wide for my liking.
6. Wanted to fill in the wheel/fender gap a bit without lowering springs. (Xdrive cars seems to have a larger gap than non Xdrives.)

Coming off the Goodyear LS2 Run-flats, these PS4's are great! More comfortable, quieter and definitely more grip.

As for fitment, the front setup is very tight. The inside center area of the wheel is very close to the caliper. I'm talking maybe only a mm at most of clearance. I hope there is no wheel deflection or caliper movements or rocks/debris gets stuck. The other concern is the inside suspension. Since I went with a taller tire, the gap between the inside mount is close as well.

The rear stance seems to stick out a bit more than I would want but ok. I think I would like to have it tucked in more about 5mm. Yes, these are from the M5 (+34 offset) and not M6 343 wheels.

So far, no issues after over 300 miles of driving.

There are significant weight savings going to these. (All done with the same bathroom scale and includes TMPS and wheels balance weights.)
OEM 19's with GYLS2 245/40-19 = 68.2 lbs
343 Fronts with PS4S 245/40-20 = 52.8 lbs
343 Rears with PS4S 275/35-20 = 58.0 lbs
This is over 50 lbs less of rotational weight savings!











BTW, the original M5 PZero tires that came with these wheels are for sale here:
http://f10.m5post.com/forums/showthread.php?t=1495977

The tires F: 245/40-20 and R: 275/35-20, any rubbing ? I have an F06 640D 2013, i bought the M343 off a wrecked M5 and current 295 rear tyres rub.

[eye4speed2]

Originally Posted by socal28

Finally got around to upgrading the OEM 19" wheels/tires with the F10 M5 343 20" wheels and Michelin Pilot Sport 4S tires.
The tires sizes I went with are F: 245/40-20 and R: 275/35-20.

Several reasons I went with these sizes.
1. Wanted a bit more sidewall for comfort and road rim protection.
2. Got a great deal on the 245/40-20 tires.
3. These sizes are OEM equipped on 7-series and new 6-series GT models. (There's got to be some assurance if BMW opts for these sizes.)
4. Speedo was off ~2 MPH slower with the original setup (compared to GPS Waze speedo). With taller diameter, the speedo is now about .5-1 mph faster. Yes, probably safer to read faster than actual though.
5. Felt that the 255/35-20 & 295/30-20 option were going to be a bit too wide for my liking.
6. Wanted to fill in the wheel/fender gap a bit without lowering springs. (Xdrive cars seems to have a larger gap than non Xdrives.)

Coming off the Goodyear LS2 Run-flats, these PS4's are great! More comfortable, quieter and definitely more grip.

As for fitment, the front setup is very tight. The inside center area of the wheel is very close to the caliper. I'm talking maybe only a mm at most of clearance. I hope there is no wheel deflection or caliper movements or rocks/debris gets stuck. The other concern is the inside suspension. Since I went with a taller tire, the gap between the inside mount is close as well.

The rear stance seems to stick out a bit more than I would want but ok. I think I would like to have it tucked in more about 5mm. Yes, these are from the M5 (+34 offset) and not M6 343 wheels.

So far, no issues after over 300 miles of driving.

There are significant weight savings going to these. (All done with the same bathroom scale and includes TMPS and wheels balance weights.)
OEM 19's with GYLS2 245/40-19 = 68.2 lbs
343 Fronts with PS4S 245/40-20 = 52.8 lbs
343 Rears with PS4S 275/35-20 = 58.0 lbs
This is over 50 lbs less of rotational weight savings!

BTW, the original M5 PZero tires that came with these wheels are for sale here:
http://f10.m5post.com/forums/showthread.php?t=1495977

Hey Socal - how much clearance do you have to the caliper? I have maybe a credit card width using M6 409 wheels on my F06 xdrive. I plan to run spacers in case of snow build up, but didn't know if I should go with 3mm or 5mm.

Trying to fit: OEM M6 wheels style 409, 20x9, +25 offset and +32 with winters square set 255/35/20 tires.

Update: bought 3 and 5mm spacers to test fit. Hoping one of them will work.