[AHB900]

Hey guys, finally picked up my F30 335i msport with all options other than lighting and dynamic. I have to say I love this car and everything about it so far. I don't know why everybody is complaining about the steering I think its great and the steering weight is perfect. ALthough, I am a bit surprised on how much understeer there is. I am coming from a 08 vw r32 and that had noticeably less understeer than the f30 even though it was awd. What can I do to reduce the understeer a bit?

THanks

[BavarianFanatic]

Put some miles on the tires and break them in. Then adjust your tire pressures to favor oversteer if you're still not happy. Did you get staggered tires?

[AHB900]

I got the 19s not sure if their staggered, ill check my window sticker.

[m2michael23]

Get rid of the rft and get a new set of Michelin PSS. Mission accomplished.

[AHB900]

Are the stock tires really that bad?

[Falafel Combo]

Originally Posted by AHB900

Are the stock tires really that bad?

It's the whole run flat thing. They just don't ride the same.

[Falafel Combo]

Originally Posted by BavarianFanatic

Put some miles on the tires and break them in. Then adjust your tire pressures to favor oversteer if you're still not happy. Did you get staggered tires?

Excellent advice. If that doesn't work, then on to the Michelins.

[BavarianFanatic]

The stock tires are fine. Steering geometry and tire size bias is more of a culprit. Staggered tires are esthetically nice, but they create understeer because the larger rear tires provide more grip than the narrower fronts. You should be able to balance everything with your tire pressures. Higher pressures in the rears relative to the fronts will provide more oversteer bias.

[OC40]

Originally Posted by BavarianFanatic

The stock tires are fine. Steering geometry and tire size bias is more of a culprit. Staggered tires are esthetically nice, but they create understeer because the larger rear tires provide more grip than the narrower fronts. You should be able to balance everything with your tire pressures. Higher pressures in the rears relative to the fronts will provide more oversteer bias.

Can you recommend specific tire pressure please?

[snowghost]

Originally Posted by ///M235i

It's the whole run flat thing. They just don't ride the same.

These third gen RFTs are pretty damn good, but pushed really hard in the twisties they "scrub" some. Michelin Sport Pilots are better for sticking.

I'm going to keep mine until they wear out and then probably go back to the Pilots.

[AHB900]

Our cars don't have a spare tire am i correct? So if i switch out to non run flats what exactly happens when i get a flat?

[OC40]

Originally Posted by AHB900

Our cars don't have a spare tire am i correct? So if i switch out to non run flats what exactly happens when i get a flat?

Think about your question for a moment and the answer shall come to you.

[Sedan_Clan]

Originally Posted by OC40

Think about your question for a moment and the answer shall come to you.

[BavarianFanatic]

Originally Posted by OC40

Can you recommend specific tire pressure please?

It's more about the difference front to rear as opposed to the actual pressures. For a squared setup I'd say 3-4 psi difference would be a good starting point. For a staggered setup you'd probably want to add another 50% or so to those figures. There are many different variables so you really need to take the time to do some trials until you find a happy medium. Most people overlook the fact that tire pressures have a huge impact on handling balance.

[OC40]

Originally Posted by BavarianFanatic

It's more about the difference front to rear as opposed to the actual pressures. For a squared setup I'd say 3-4 psi difference would be a good starting point. For a staggered setup you'd probably want to add another 50% or so to those figures. There are many different variables so you really need to take the time to do some trials until you find a happy medium. Most people overlook the fact that tire pressures have a huge impact on handling balance.

Thanks for the information, I appreciate it. I'm on a staggered set up.

[MassBimmer]

Originally Posted by AHB900

Hey guys, finally picked up my F30 335i msport with all options other than lighting and dynamic. I have to say I love this car and everything about it so far. I don't know why everybody is complaining about the steering I think its great and the steering weight is perfect. ALthough, I am a bit surprised on how much understeer there is. I am coming from a 08 vw r32 and that had noticeably less understeer than the f30 even though it was awd. What can I do to reduce the understeer a bit?

THanks

You don't understand why we complain about the steering on the F3x because you didn't own an E9x.

[snowghost]

Originally Posted by AHB900

Our cars don't have a spare tire am i correct? So if i switch out to non run flats what exactly happens when i get a flat?

It's called Flatbed Tow Truck baby. Accept no substitutes.

[435iaffair]

Originally Posted by AHB900

Our cars don't have a spare tire am i correct? So if i switch out to non run flats what exactly happens when i get a flat?

From another thread:

Originally Posted by stevehecht

Or, you can carry this in your trunk. Very good reviews on Amazon.com.

Slime 70005 Safety Spair 7-Minute Flat Tire Repair System 12-Volt

http://www.amazon.com/Slime-70005-Sa...sim_sbs_auto_1

[snowghost]

Originally Posted by 435iaffair

From another thread:

I thought Slime like products ruin your wheels. Although my M3 came with a similar kit.

[BavarianFanatic]

Originally Posted by snowghost

I thought Slime like products ruin your wheels. Although my M3 came with a similar kit.

Wheels? No. TPMS sensors? Yes.

[300hp]

After getting two tire punctures while driving at highway speeds I am a HUGE fan of run flats. I was able to slow down and drive home to park the car in shame

The next working day I was able to drive the car to the dealership at about 40mph. I travelled at least 40 miles at each incident.

It's that peace of mind that I can't afford to lose.