275-35 front - 295-35 rear OEM Black wheels

jeff4598 · 03-05-2015, 12:15 PM

Why change the fronts? Wouldn't just widening the rears give all the traction benefit AND less understeer, greater ability to throttle steer? Maybe just add spacers on the front to balance appearance.

CanAutM3 · 03-05-2015, 12:25 PM

Quote:

Originally Posted by jeff4598

Why change the fronts? Wouldn't just widening the rears give all the traction benefit AND less understeer, greater ability to throttle steer? Maybe just add spacers on the front to balance appearance.

Uhhh, what ?

How can increasing rear grip without increasing front grip result in less understeer

?

hellrotm · 03-05-2015, 12:29 PM

Quote:

Originally Posted by jeff4598

Wouldn't just widening the rears give all the traction benefit AND less understeer, greater ability to throttle steer?

No opposite, more understeer. More tire in the rear would increase grip, therefore less oversteer.

Increasing front tire width would achieve less understeer. With a square tire setup achieving a near neutral balance.

MDIVISION · 03-05-2015, 01:09 PM

Quote:

Originally Posted by CanAutM3

If you do that, you would also need to reduce the front aspect ratio to 275/30R19.

Going with a 275/35R19 front and 295/30R19 would sway the front-to-rear stagger in the wrong direction and screw up the DSC/ABS calibrations.

damn

Palomequet · 03-05-2015, 01:48 PM

Quote:

Originally Posted by jeff4598

Why change the fronts? Wouldn't just widening the rears give all the traction benefit AND less understeer, greater ability to throttle steer? Maybe just add spacers on the front to balance appearance.

To keep the front-rear bias balance.

Palomequet · 03-05-2015, 01:50 PM

Quote:

Originally Posted by CanAutM3

Uhhh, what ?

How can increasing rear grip without increasing front grip result in less understeer

?

+1

MDIVISION · 03-08-2015, 05:45 PM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by afadeev

By going from 255->275mm front and 275->295m rear tires, you are 20mm wider. Or 0.787".
Since the tire will be centered, it will stick out !0.39" on each side.

Another consideration is the tire vs. wheel width.
Front wheels are 9JX18 ET:29 or 9JX19 ET:29.
Rear wheels are 10JX18 ET:40 or 10JX19 ET:40.

Michelin recommends both 275/35-18 and 275/35-19 tires to go onto 9-11" wide wheels. So 9" OEM wheels is at the minimum acceptable width, but still OK.
Similarly, both 295/35-18 and -19 are good to go onto 10-11.5" wheels, so rear 10" wide wheels are minimally acceptable.

http://www.tirerack.com/tires/tires....ndard%20Brakes

a

It is actually more than that. According to the Michelin site, the 295 are 1.2" wider than the 275 (271mm vs 301mm). So they would protrude 0.6" more on each side (15mm).

Some folks are running up to 20mm spacers front and rear without rubbing and 15mm spacers are very popular. Since the rear tires in the OP stick out by 15mm, it should not cause any rubbing IMO.

After further research, I might opt for a 265/285 /35R19 setup. The 295/35R19 are significantly more expensive than the 285/35R19. On the vendor sites I checked, the 295 are ~26% more expensive than the 275 while the 285 are only ~3% more expensive. However, that extra rubber on the road of the 295 sure is tempting.

Yeah but do you have sidewall support with 295s on a 10" rim?

CanAutM3 · 03-08-2015, 10:38 PM

Quote:

Originally Posted by MDIVISION

Yeah but do you have sidewall support with 295s on a 10" rim?

The 295/35R19 PSS is specifically designed for installation on the 10" wide rim of the F10 M5. If the sidewalls can support the weight of an M5 under load, I am sure they will have no trouble supporting an F8X

.

WVUDrJay · 03-08-2015, 11:51 PM

Anyone know with this setup what spacers if any would work on a stock suspension without rubbing?

Palomequet · 03-09-2015, 09:02 AM

Quote:

Originally Posted by WVUDrJay

Anyone know with this setup what spacers if any would work on a stock suspension without rubbing?

NONE, if you wish 5 mm squared set to be aggressive.

Palomequet · 03-09-2015, 09:04 AM

Quote:

Originally Posted by CanAutM3

The 295/35R19 PSS is specifically designed for installation on the 10" wide rim of the F10 M5. If the sidewalls can support the weight of an M5 under load, I am sure they will have no trouble supporting an F8X

.

+1

/// M sa · 03-09-2015, 11:46 AM

So I ordered the same exact set up 275/35/19 for front and 295/35/19 for rear for my F80 M3.... Tirerack called me immediately and asked if I was sure If I wanted to go with this set up as they advise against it

I guess we ll see once I put it on the car.

Palomequet · 03-09-2015, 12:37 PM

Quote:

Originally Posted by /// M sa

So I ordered the same exact set up 275/35/19 for front and 295/35/19 for rear for my F80 M3.... Tirerack called me immediately and asked if I was sure If I wanted to go with this set up as they advise against it

I guess we ll see once I put it on the car.

You did well, you are going to enjoy the looks and her performance.

/// M sa · 03-09-2015, 12:44 PM

Quote:

Originally Posted by Palomequet

You did well, you are going to enjoy the looks and her performance.

I hope so

so you haven't hand any rubbing issues in the rear at all? I am not lowered yet and probably will keep it as is for now.

Palomequet · 03-09-2015, 12:59 PM

Quote:

Originally Posted by /// M sa

I hope so

so you haven't hand any rubbing issues in the rear at all? I am not lowered yet and probably will keep it as is for now.

None and mine is lowered on AC Schnitzer springs.

/// M sa · 03-09-2015, 01:06 PM

Quote:

Originally Posted by Palomequet

None and mine is lowered on AC Schnitzer springs.

Good to hear, does the rear look wider than before on stock tires? 295's add about 20 mm which is not much but wondering since its on stock rims if the look is wider.

Palomequet · 03-09-2015, 01:09 PM

Quote:

Originally Posted by /// M sa

Good to hear, does the rear look wider than before on stock tires? 295's add about 20 mm which is not much but wondering since its on stock rims if the look is wider.

You are going to be very pleased with the wide stance you get with these 295's

/// M sa · 03-09-2015, 01:12 PM

Quote:

Originally Posted by Palomequet

You are going to be very pleased with the wide stance you get with these 295's

Sounds great :-) cant wait till I get them on and will post pics

Brosef · 03-11-2015, 05:18 PM

Quote:

Originally Posted by /// M sa

Sounds great :-) cant wait till I get them on and will post pics

please do. need more pics of this setup. seems like a great way to pick up more traction while keeping the stock wheels (which I love) and avoid using spacers to get that more flush look (I'm hesitant to use spacers since I've heard that highway shimmy is somewhat common). the fact that you reduce your odometer mileage by +/- ~2% is just icing on the cake

/// M sa · 03-11-2015, 07:24 PM

Quote:

Originally Posted by Brosef

please do. need more pics of this setup. seems like a great way to pick up more traction while keeping the stock wheels (which I love) and avoid using spacers to get that more flush look (I'm hesitant to use spacers since I've heard that highway shimmy is somewhat common). the fact that you reduce your odometer mileage by +/- ~2% is just icing on the cake

They are being installed tomorrow will update shortly

Palomequet · 03-11-2015, 07:45 PM

Quote:

Originally Posted by /// M sa

They are being installed tomorrow will update shortly

+1

Brosef · 03-12-2015, 10:28 AM

Quote:

Originally Posted by /// M sa

They are being installed tomorrow will update shortly

awesome. subscribed for updates

03-05-2015, 12:15 PM	#45
jeff4598 Captain 172 Rep 676 Posts Drives: 2019 M2C HS, DCT, much Dinan Join Date: Jan 2009 Location: new jersey iTrader: (0)	Why change the fronts? Wouldn't just widening the rears give all the traction benefit AND less understeer, greater ability to throttle steer? Maybe just add spacers on the front to balance appearance.
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03-08-2015, 11:51 PM	#53
WVUDrJay Captain 262 Rep 658 Posts Drives: 2015 M4 Join Date: Jul 2014 Location: West Virginia iTrader: (0)	Anyone know with this setup what spacers if any would work on a stock suspension without rubbing? __________________ 2015 Alpine white M4\black leather, carbon fiber trim,manual,exec package, 19 inch black rims, M suspension, HK stereo, LED lighting
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03-09-2015, 11:46 AM	#56
/// M sa Major 241 Rep 1,418 Posts Drives: F80 MG Join Date: Jan 2014 Location: Delmarva iTrader: (0)	So I ordered the same exact set up 275/35/19 for front and 295/35/19 for rear for my F80 M3.... Tirerack called me immediately and asked if I was sure If I wanted to go with this set up as they advise against it I guess we ll see once I put it on the car.
	Appreciate 0 Quote