[peelerec]

Originally Posted by BayAreaB58

I lose traction on these RFT from a dig just barely even trying to move. Would square 245 PS4S really be a noticeable change?

Yes, huge difference in grip between the RFT and PS4S. Night and day.

[D0NVT]

Originally Posted by Nembus

Ok i’m pretty sure I got the performance, I got 255 in the back and a smaller size in the front. My vehicle FA has: S1PN 19" Light-Alloy Wheel Double Spk.791M HP

Which I assume is what you’re talking about.

I'm 100% percent sure that rear 255/35/19 goes with 8.5J from the factory.

[D0NVT]

Originally Posted by Z K

Yes, of course. The loss in feedback and aesthetic reasons are enough to dissuade most people from it.

Not saying I'd run such a set up on this car, I just want to know if it clears.

I'm sure you have to be clear with 225/35/19 on the front, here's the prove but with different offset:
SM-10s in Anthracite with Michelin Pilot Sport 4S Tires.
Front: 19x9" ET28 with 255/35-19
Rear: 19x10" ET38 with 275/35-19
Dinan Lowering Springs

[D0NVT]

As for me I really want 245/45/18 on 9J all around but I'm scare off wheel contact with spring cover on the front.
Riding quality and front grip should be much better.

[RNigel]

Originally Posted by MetalM00xi

You’re absolutely correct there. My primary motivation was to get away from the Cinturato more than anything else. As a product, the cross climate 2s are phenomenal on paper and I’m pretty sure over time I will really appreciate them, just a matter of the subconscious getting used to driving with these tired. Anyways, for the context of this thread, the size of 235/40-19 is great for the base square setup, I haven’t noticed any particular rubbing or pulling issues yet. I’ll report back after alignment in a week or two.

Any follow up post alignment? I’m considering doing the 235/40/19 non runflat setup as well

[peelerec]

Originally Posted by RNigel

Any follow up post alignment? I’m considering doing the 235/40/19 non runflat setup as well

There is no issue whatsoever running this size. You don’t need spacers. It fits with no issues.

[RNigel]

Originally Posted by peelerec

There is no issue whatsoever running this size. You don’t need spacers. It fits with no issues.

Much appreciated! how did you end up changing the tires in the MyBMW app?

[GA/\/\/\/\A_CT]

Originally Posted by D0NVT

I'm sure you have to be clear with 225/35/19 on the front, here's the prove but with different offset:
SM-10s in Anthracite with Michelin Pilot Sport 4S Tires.
Front: 19x9" ET28 with 255/35-19
Rear: 19x10" ET38 with 275/35-19
Dinan Lowering Springs

Looks nice. Could you post a side profile shot? I have same color car and was considering sm10.

[peelerec]

Originally Posted by RNigel

Much appreciated! how did you end up changing the tires in the MyBMW app?

I personally didn’t. I did however change manually on idrive 7.

[peelerec]

Originally Posted by RNigel

Any follow up post alignment? I’m considering doing the 235/40/19 non runflat setup as well

Also, just for reference. This is how 235/40/19 PS4S fits with 12mm front and 15mm rear spacers.

[RNigel]

Originally Posted by peelerec

Also, just for reference. This is how 235/40/19 PS4S fits with 12mm front and 15mm rear spacers.

Oh this looks fantastic!!!

[D0NVT]

Originally Posted by GA/\/\/\/\A_CT

Looks nice. Could you post a side profile shot? I have same color car and was considering sm10.

Actually it's not mine. I've found in here:
https://g20.bimmerpost.com/forums/sh...1791330&page=4
post #74 and later

[D0NVT]

Does anybody installed non-Michelin 245/40/19 up front?
Seems it's going be tight refer to APEX thread.

[Ajhanif]

Hi guys, I have a set of 20x 8.5 245/35/20 front and 20x9.5 275/30/20 rear wheels and tires with tpms. Front and rears are pirelli pzeros and also comes with two pairs of rear continental conti sport contact 6 tires with 8.5-9/32nds on all four. Front two wheels have about two inches of wheel rash from when I was running smaller tires. No other damage, Located in NorCal. Looking for 2800 for everything but willing to head out reasonable offers! Fitted on my m340i pictures are actual from my car without spacers and on stock suspension height !

[Z K]

Originally Posted by BayAreaB58

I lose traction on these RFT from a dig just barely even trying to move. Would square 245 PS4S really be a noticeable change?

I would expect so.

All the acceleration times the magazines report are with the optional high performance tire package with 255 PS4S rear tires. The Pirelli all season run flats are much worse for grip.

[Z K]

Originally Posted by peelerec

Also, just for reference. This is how 235/40/19 PS4S fits with 12mm front and 15mm rear spacers.

Nice pic from Sonoma! I think I've seen your car before on track. I'm usually in my M3 at track days.

[peelerec]

Originally Posted by Z K

Nice pic from Sonoma! I think I've seen your car before on track. I'm usually in my M3 at track days.

I do recall seeing an M3 at Sonoma two weeks ago! Was that you? Lol
There is another G20 as well with apex VS-5RS bronze wheels that runs in the advanced group.

[Z K]

Originally Posted by peelerec

I do recall seeing an M3 at Sonoma two weeks ago! Was that you? Lol
There is another G20 as well with apex VS-5RS bronze wheels that runs in the advanced group.

I think the time I saw your car was with speed sf. I was in my friend’s s2000 that time. Here’s my m3 at Sonoma. I’ll be at Thunderhill on Monday 5/29 next.

[peelerec]

Originally Posted by Z K

I think the time I saw your car was with speed sf. I was in my friend’s s2000 that time. Here’s my m3 at Sonoma. I’ll be at Thunderhill on Monday 5/29 if you’re coming out.

Ah, gotcha. Not this time. I might join my buddies back home in SoCal at Streets of Willow that same Monday since I’ll be down in LA visiting family for the holiday weekend.
Which group are you going to T-Hill with?

[Z K]

Originally Posted by peelerec

Ah, gotcha. Not this time. I might join my buddies back home in SoCal at Streets of Willow that same Monday since I’ll be down in LA visiting family for the holiday weekend.
Which group are you going to T-Hill with?

I am going with OnGrid this weekend. They are doing both Thunderhill east and west on the same day. I did it with them last year as well. It's a fun event where you can do 2 tracks on the same day. By lunch time, you'd have done 8 track sessions already... super tiring but you get a ton of seat time.

I've been tracking for 20+ years so most local tracks I've done a few times already. Thunderhill east is my "home" course as that was what I first tracked back in college.

[BayAreaB58]

Originally Posted by Z K

I would expect so.

All the acceleration times the magazines report are with the optional high performance tire package with 255 PS4S rear tires. The Pirelli all season run flats are much worse for grip.

Good to know, replace sh**box RFT will be next on my list 😂

[peelerec]

Originally Posted by Z K

I am going with OnGrid this weekend. They are doing both Thunderhill east and west on the same day. I did it with them last year as well. It's a fun event where you can do 2 tracks on the same day. By lunch time, you'd have done 8 track sessions already... super tiring but you get a ton of seat time.

I've been tracking for 20+ years so most local tracks I've done a few times already. Thunderhill east is my "home" course as that was what I first tracked back in college.

Wow! That’s a neat setup. I’ll have to join that next time. T-Hill east seems to be my cars preferred track with “easy” turns as compared to others, lol. G20 is too heavy and loose for other tight tracks.