Tyre Advice

Kimeran · 08-27-2018, 05:26 AM

Hi everyone

Just some advice on tyres please.
I have a MY18 M3 ZCP with style 666M wheels.
Car currently has the original sets of tyres and I am considering going 295/30/20 on the rear.
Has anybody done this? Any issues?

Reason for my concern is that a friend went up to 285/35/19 (from the original 275/35/19) on his M4 and his car is now very unstable through the corners.

Thanks for the assistance.

Torfhinn · 08-27-2018, 06:49 AM

You can find a lot of great info already posted here @ https://f80.bimmerpost.com/forums/sh....php?t=1453199 and https://f80.bimmerpost.com/forums/sh....php?t=1089535

If you need more info please feel free to ask there are a ton of very knowledge able people here.

Currently I have 265/35/19 & 285/35/19 MPS4S tires and I have no issues at all; it is like its glued to the ground unless I am in very heavy rain then I get a little hydroplaning but its nothing the can't be managed.

Poiseuille · 08-27-2018, 07:48 AM

265/35:19 & 285/30:20 PS4S on OEM 763m and no negative issues at all. Previously had 255/35 & 275/35 on 437m. Current set up is better, no question. Certainly have none of the symptoms your friend describes. While I personally would not put 295's on a 10 inch rim I know that many forum members have done that and I haven't heard any complaints.

Signature Wheel BMW · 08-30-2018, 08:46 AM

If you go wider, go proportionally so the front to rear rolling diameter matches OEM. 265/30/20 front and 295/30/20 will fit. The sidewall will look a bit bulge or meaty if you're into that look.

whoop_ass · 08-31-2018, 12:39 AM

Quote:

Originally Posted by Torfhinn

You can find a lot of great info already posted here @ https://f80.bimmerpost.com/forums/sh....php?t=1453199 and https://f80.bimmerpost.com/forums/sh....php?t=1089535

If you need more info please feel free to ask there are a ton of very knowledge able people here.

Currently I have 265/35/19 & 285/35/19 MPS4S tires and I have no issues at all; it is like its glued to the ground unless I am in very heavy rain then I get a little hydroplaning but its nothing the can't be managed.

I run this exact setup as you and dont understand why original posters friend has issue with stability.
the 285/35 rear works a treat.

Kimeran · 08-31-2018, 02:52 AM

Quote:

Originally Posted by whoop_ass

I run this exact setup as you and dont understand why original posters friend has issue with stability.
the 285/35 rear works a treat.

Hi, my friend is running the stock front tyre size, so 255/35/19 and 285/35/19 at the rear.

Kimeran · 08-31-2018, 02:56 AM

Quote:

Originally Posted by Signature Wheel BMW

If you go wider, go proportionally so the front to rear rolling diameter matches OEM. 265/30/20 front and 295/30/20 will fit. The sidewall will look a bit bulge or meaty if you're into that look.

I'm very undecided on the meaty look.
My worry is that I am lowered with 15mm spacers at the rear and 12mm spacers in the front. I'm worried that the meatier tyre would rub.

whoop_ass · 08-31-2018, 07:30 AM

Quote:

Originally Posted by Kimeran

Hi, my friend is running the stock front tyre size, so 255/35/19 and 285/35/19 at the rear.

Still makes no sense why it would be unstable
maybe at most it will induce a bit of under steer with the rear being a bigger stagger
I run a 265 and 285 and it's on rails

whoop_ass · 08-31-2018, 07:33 AM

Quote:

Originally Posted by Kimeran

I'm very undecided on the meaty look.
My worry is that I am lowered with 15mm spacers at the rear and 12mm spacers in the front. I'm worried that the meatier tyre would rub.

Also with a 15mm spacer and 295 rear you will def touch on rear.
it Equivalent to running a 25 offset rim, coupled with a wider tyre leaves very little room, if you going with the New P4s they def run even wider than a PSS.

Kimeran · 09-03-2018, 02:03 AM

Quote:

Originally Posted by whoop_ass

Also with a 15mm spacer and 295 rear you will def touch on rear.
it Equivalent to running a 25 offset rim, coupled with a wider tyre leaves very little room, if you going with the New P4s they def run even wider than a PSS.

Ok cool, thank you for the advice!

Psychotic Mouse · 09-03-2018, 04:30 AM

I am running PS4S's 295 on the rear with 296 up front on 20". However I have wider rims to accommodate the extra width of the tyres.

I can confirm after a track day that there are zero stability issues, and it sticks like its on rails. I struggle to get the rear to step out now with TC all the way off. (When up to temp of course).

Here are some pics of what the 295 looks like on a 11J rim with Stock offset. On the stock rim it may be rather rounded.

08-27-2018, 05:26 AM	#1
Kimeran Private 69 Rep 97 Posts Drives: 2017 M240i Join Date: Aug 2017 Location: Johannesburg iTrader: (0)	Tyre Advice Hi everyone Just some advice on tyres please. I have a MY18 M3 ZCP with style 666M wheels. Car currently has the original sets of tyres and I am considering going 295/30/20 on the rear. Has anybody done this? Any issues? Reason for my concern is that a friend went up to 285/35/19 (from the original 275/35/19) on his M4 and his car is now very unstable through the corners. Thanks for the assistance.
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08-27-2018, 06:49 AM	#2
Torfhinn New Member 8 Rep 25 Posts Drives: 2015 M3 F80 Join Date: Apr 2018 Location: Minneapolis, MN iTrader: (0)	You can find a lot of great info already posted here @ https://f80.bimmerpost.com/forums/sh....php?t=1453199 and https://f80.bimmerpost.com/forums/sh....php?t=1089535 If you need more info please feel free to ask there are a ton of very knowledge able people here. Currently I have 265/35/19 & 285/35/19 MPS4S tires and I have no issues at all; it is like its glued to the ground unless I am in very heavy rain then I get a little hydroplaning but its nothing the can't be managed. Last edited by Torfhinn; 08-27-2018 at 07:53 AM..
	Appreciate 2 Kimeran69.00 MPoweRo428.00 Quote

08-27-2018, 07:48 AM	#3
Poiseuille Brigadier General 5393 Rep 3,737 Posts Drives: 2016 M4 DCT Tanzanite/Amaro Join Date: Oct 2016 Location: Princeton iTrader: (0) Garage List [0.00] [10.00]	265/35:19 & 285/30:20 PS4S on OEM 763m and no negative issues at all. Previously had 255/35 & 275/35 on 437m. Current set up is better, no question. Certainly have none of the symptoms your friend describes. While I personally would not put 295's on a 10 inch rim I know that many forum members have done that and I haven't heard any complaints.
	Appreciate 1 Kimeran69.00 Quote

08-30-2018, 08:46 AM	#4
Signature Wheel BMW Major 1104 Rep 1,083 Posts Drives: Signature BMW Join Date: Sep 2016 Location: IG: signature_bmw iTrader: (0)	If you go wider, go proportionally so the front to rear rolling diameter matches OEM. 265/30/20 front and 295/30/20 will fit. The sidewall will look a bit bulge or meaty if you're into that look. __________________ Jimmy \| BMW Addict \| Signature Performance Wheels \| OBSESSED WITH PERFECTION \| IG: Signature_BMW \| Email: jimmy@signaturewheel.com
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09-03-2018, 04:30 AM	#11
Psychotic Mouse Private 88 Rep 99 Posts Drives: Sakhir Orange M3 Join Date: Nov 2017 Location: Pretoria South Africa iTrader: (0)	I am running PS4S's 295 on the rear with 296 up front on 20". However I have wider rims to accommodate the extra width of the tyres. I can confirm after a track day that there are zero stability issues, and it sticks like its on rails. I struggle to get the rear to step out now with TC all the way off. (When up to temp of course). Here are some pics of what the 295 looks like on a 11J rim with Stock offset. On the stock rim it may be rather rounded. Attached Images
	Appreciate 2 Kimeran69.00 whoop_ass355.00 Quote