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      11-25-2018, 10:47 AM   #23
chief1richard
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Originally Posted by rich8566 View Post
I struggled mightily to come up with my track wheel and tire combination. I'm running a staggered setup since it was the only way to maintain the correct tire height which differs front and rear on this car - 25.7"and 26.0 (as far as I recall). This maintains the proper revs per mile of the tires front and rear. I also wanted to keep clearance issues out of the picture since I have no interest in adding camber plates or wheel spacers. I really wanted a square setup but I could not get there given the front and rear OEM tire height diff. As far as going with 18" wheels, first, they are lighter and cheaper. The same goes for 18" tires since they are also cheaper for track duty. Last, the Hankooks have super stiff sidewalls, so they don't rollover like the OEM street tires.

I had prior experience with the excellent Hankook RS-3s on a prior car, so I felt ok going with the RS-4s. The only real downside is you can't rotate them on the fly front to rear and side to side, but mid season you can flip them and remount them to get max use out of the tires. Last, I used close to OEM wheel offsets front and rear - ET 30 front and ET40 rear.

Finally the wheel width differs by 1" front and rear. All in it was a great decision since the OEM M2 is far more neutral compared to my old M235i which had a lot more front end push - ie understeer.

I'm very happy with this easy peasy setup. Swapping pads and wheels now only takes me 40 minutes since I learned to jack up the one entire side of the car at a time making pad and tire changes super efficient.

Tires are 245/40-18 and 265/40-18.
Is there any reason you did not go 245/35-18, 265/35-18 on the RS4's? I have just bought Apex 18x9.5" FL5 wheels in square set-up. Was looking to put 255/35/18 square with RS4's, but are sold out for the season on their web-site. ( Tire Rack)
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      11-27-2018, 12:44 PM   #24
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I think I'm going to go with the RS4's, pads and fluid and skip the camber plates for now. Given I'm not going 10/10ths on the track I'm hoping they'll be ok.
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      11-27-2018, 04:01 PM   #25
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Quote:
Originally Posted by chief1richard View Post
Quote:
Originally Posted by rich8566 View Post
I struggled mightily to come up with my track wheel and tire combination. I'm running a staggered setup since it was the only way to maintain the correct tire height which differs front and rear on this car - 25.7"and 26.0 (as far as I recall). This maintains the proper revs per mile of the tires front and rear. I also wanted to keep clearance issues out of the picture since I have no interest in adding camber plates or wheel spacers. I really wanted a square setup but I could not get there given the front and rear OEM tire height diff. As far as going with 18" wheels, first, they are lighter and cheaper. The same goes for 18" tires since they are also cheaper for track duty. Last, the Hankooks have super stiff sidewalls, so they don't rollover like the OEM street tires.

I had prior experience with the excellent Hankook RS-3s on a prior car, so I felt ok going with the RS-4s. The only real downside is you can't rotate them on the fly front to rear and side to side, but mid season you can flip them and remount them to get max use out of the tires. Last, I used close to OEM wheel offsets front and rear - ET 30 front and ET40 rear.

Finally the wheel width differs by 1" front and rear. All in it was a great decision since the OEM M2 is far more neutral compared to my old M235i which had a lot more front end push - ie understeer.

I'm very happy with this easy peasy setup. Swapping pads and wheels now only takes me 40 minutes since I learned to jack up the one entire side of the car at a time making pad and tire changes super efficient.

Tires are 245/40-18 and 265/40-18.
Is there any reason you did not go 245/35-18, 265/35-18 on the RS4's? I have just bought Apex 18x9.5" FL5 wheels in square set-up. Was looking to put 255/35/18 square with RS4's, but are sold out for the season on their web-site. ( Tire Rack)
Quote:
Originally Posted by chief1richard View Post
Quote:
Originally Posted by rich8566 View Post
I struggled mightily to come up with my track wheel and tire combination. I'm running a staggered setup since it was the only way to maintain the correct tire height which differs front and rear on this car - 25.7"and 26.0 (as far as I recall). This maintains the proper revs per mile of the tires front and rear. I also wanted to keep clearance issues out of the picture since I have no interest in adding camber plates or wheel spacers. I really wanted a square setup but I could not get there given the front and rear OEM tire height diff. As far as going with 18" wheels, first, they are lighter and cheaper. The same goes for 18" tires since they are also cheaper for track duty. Last, the Hankooks have super stiff sidewalls, so they don't rollover like the OEM street tires.

I had prior experience with the excellent Hankook RS-3s on a prior car, so I felt ok going with the RS-4s. The only real downside is you can't rotate them on the fly front to rear and side to side, but mid season you can flip them and remount them to get max use out of the tires. Last, I used close to OEM wheel offsets front and rear - ET 30 front and ET40 rear.

Finally the wheel width differs by 1" front and rear. All in it was a great decision since the OEM M2 is far more neutral compared to my old M235i which had a lot more front end push - ie understeer.

I'm very happy with this easy peasy setup. Swapping pads and wheels now only takes me 40 minutes since I learned to jack up the one entire side of the car at a time making pad and tire changes super efficient.

Tires are 245/40-18 and 265/40-18.
Is there any reason you did not go 245/35-18, 265/35-18 on the RS4's? I have just bought Apex 18x9.5" FL5 wheels in square set-up. Was looking to put 255/35/18 square with RS4's, but are sold out for the season on their web-site. ( Tire Rack)
Yes - I went with the 40 series tires to maintain the exact same tire diameter (height) as the OEM 35 series 19" tires.
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      11-27-2018, 04:01 PM   #26
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Quote:
Originally Posted by ChrisM2 View Post
I think I'm going to go with the RS4's, pads and fluid and skip the camber plates for now. Given I'm not going 10/10ths on the track I'm hoping they'll be ok.
Quote:
Originally Posted by chief1richard View Post
Quote:
Originally Posted by rich8566 View Post
I struggled mightily to come up with my track wheel and tire combination. I'm running a staggered setup since it was the only way to maintain the correct tire height which differs front and rear on this car - 25.7"and 26.0 (as far as I recall). This maintains the proper revs per mile of the tires front and rear. I also wanted to keep clearance issues out of the picture since I have no interest in adding camber plates or wheel spacers. I really wanted a square setup but I could not get there given the front and rear OEM tire height diff. As far as going with 18" wheels, first, they are lighter and cheaper. The same goes for 18" tires since they are also cheaper for track duty. Last, the Hankooks have super stiff sidewalls, so they don't rollover like the OEM street tires.

I had prior experience with the excellent Hankook RS-3s on a prior car, so I felt ok going with the RS-4s. The only real downside is you can't rotate them on the fly front to rear and side to side, but mid season you can flip them and remount them to get max use out of the tires. Last, I used close to OEM wheel offsets front and rear - ET 30 front and ET40 rear.

Finally the wheel width differs by 1" front and rear. All in it was a great decision since the OEM M2 is far more neutral compared to my old M235i which had a lot more front end push - ie understeer.

I'm very happy with this easy peasy setup. Swapping pads and wheels now only takes me 40 minutes since I learned to jack up the one entire side of the car at a time making pad and tire changes super efficient.

Tires are 245/40-18 and 265/40-18.
Is there any reason you did not go 245/35-18, 265/35-18 on the RS4's? I have just bought Apex 18x9.5" FL5 wheels in square set-up. Was looking to put 255/35/18 square with RS4's, but are sold out for the season on their web-site. ( Tire Rack)
That's exactly my point. Easy peasy if you are not 10/10th and you want a steerable car.
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      11-27-2018, 10:19 PM   #27
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Quote:
Originally Posted by ChrisM2 View Post
I think I'm going to go with the RS4's, pads and fluid and skip the camber plates for now. Given I'm not going 10/10ths on the track I'm hoping they'll be ok.
Depending on your experience level this could be a mistake. An experienced driver with good pace will burn through the outside edge of those tires in 4-6 20 min sessions. Camber plates are the most economic way of extending tire life, camber plates and a square setup is probably the best for tire life.

I delayed the camber plates too long and have burned through a lot of Cup2 fronts this year and I'm finally installing some Ground Control Camber Plates. A buddy has been running them and gets very even wear on his tires driving at a pace behind mine. -2.5 degrees appears to be the sweet spot to start.
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      11-28-2018, 09:35 PM   #28
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Quote:
Originally Posted by rich8566 View Post
Yes - I went with the 40 series tires to maintain the exact same tire diameter (height) as the OEM 35 series 19" tires.




Did you notice any detectable sidewall roll with the 40 vs 35?
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      11-28-2018, 09:39 PM   #29
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Quote:
Originally Posted by pruettfan View Post
Depending on your experience level this could be a mistake. An experienced driver with good pace will burn through the outside edge of those tires in 4-6 20 min sessions. Camber plates are the most economic way of extending tire life, camber plates and a square setup is probably the best for tire life.

I delayed the camber plates too long and have burned through a lot of Cup2 fronts this year and I'm finally installing some Ground Control Camber Plates. A buddy has been running them and gets very even wear on his tires driving at a pace behind mine. -2.5 degrees appears to be the sweet spot to start.
Have you installed GC Camber Plates yet? If so , do you notice any major diff. driving on street with them? I also am on the fence about them.
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      11-29-2018, 12:22 AM   #30
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Quote:
Originally Posted by chief1richard View Post
Have you installed GC Camber Plates yet? If so , do you notice any major diff. driving on street with them? I also am on the fence about them.
You weren’t asking me, but in my experience, I only noticed a subtle increase in soda noise, and really only on certain surfaces. No noticeable impact on ride comfort. Totally livable on a daily that sees track time.

5k miles over the last 6 months so far for me.
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      12-01-2018, 04:58 PM   #31
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Quote:
Originally Posted by chief1richard View Post
Quote:
Originally Posted by rich8566 View Post
Yes - I went with the 40 series tires to maintain the exact same tire diameter (height) as the OEM 35 series 19" tires.




Did you notice any detectable sidewall roll with the 40 vs 35?
No sidewall roll with the 40 series Hankook R-S4s. The sidewalls are super stiff.
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      01-26-2019, 08:41 PM   #32
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What are the thoughts on the 763 wheels with Cup2 tires offered by BMW. $4600 from Sun Motors.
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      01-26-2019, 10:04 PM   #33
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Hi, Chris
I track at Cayuga and Shannonville, mostly at Cayuga.
Hope to see you sometimes at track when season starts.
My current setup
275 35 18 square offset 28 with 12mm front spacer
For front camber I suggest you get Ground control camber plate as for Cayuga you will find uneven tire wear mainly on the out side.
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      01-31-2019, 09:52 AM   #34
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FOR M2 Comp- thinking of 9x19 offset 29 or 30.... with 245 35 square... per apex, this is the best set up for the M2C with no hassles....

has anyone tried this set up? would like to go wider but not wanting to put spacers, camber plates on a brand new car....

i think this would work fine, but curious of others thoughts
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      02-05-2019, 08:56 AM   #35
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Quote:
Originally Posted by BigBear2016 View Post
FOR M2 Comp- thinking of 9x19 offset 29 or 30.... with 245 35 square... per apex, this is the best set up for the M2C with no hassles....

has anyone tried this set up? would like to go wider but not wanting to put spacers, camber plates on a brand new car....

i think this would work fine, but curious of others thoughts
That’s an odd recommendation, unless you are talking about snow tires for a winter setup. Why would you want to put such narrow tires out back on a 400hp RWD car? If you want to stay with 19’s and don’t want to deal with spacers or camber plates, stick to stock sized wheels (19x9 fr, 19x10r) with stock sized tires (245/35 fr, 265/35 r).
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      02-06-2019, 10:37 PM   #36
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Quote:
Originally Posted by leo_zii View Post
Hi, Chris
I track at Cayuga and Shannonville, mostly at Cayuga.
Hope to see you sometimes at track when season starts.
My current setup
275 35 18 square offset 28 with 12mm front spacer
For front camber I suggest you get Ground control camber plate as for Cayuga you will find uneven tire wear mainly on the out side.
Good advise. I also have over 50 track days and have podiumed the car in TT4, yet I drive it to the track and back home. For pads, I like the PFC08....when I added Stoptech slotted rotors I no longer had to swap out track pads for street...for some reason this combo really reduced squeal. I use Motul 660, because it has a high dry boiling point, is much cheaper than SRF, but I do a bleed after every event. Don't even think about a BBK, factory brakes with pads and fluid work fine and you can fit 18 wheels. I like my GC camber plates, set at neg 3.2, which I don't change between street and track. The easiest set up is the factory wheels with something like RE71, but I prefer 18 square with Rcomps.
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