[JLBMW]

Originally Posted by bkdore

Those pressures sound a little on the high side. Check the door jamb for the correct pressures. Have you checked/reset the tire pressure settings in iDrive?

Have my Conti DWS at 32 Front / 38 Rear, just as what's printed on the door jamb label.

[Crjetlife]

Originally Posted by insanecoder

I guess I am the only one who likes these RFTs
I like harsh rides.. comes from owning sports cars previously
and the RFTs with stiff sidewalls gives me just that
the RFTS give excellent control & feel of the road when cornering

Same here. When you're used to driving sports cars, you're accustomed to the stiffness on the road.

[blschaefer1]

Originally Posted by bkdore

Those pressures sound a little on the high side. Check the door jamb for the correct pressures. Have you checked/reset the tire pressure settings in iDrive?

Bear in mind that the pressures listed on the door jamb label are setup for the RFT’s, which run nominally lower pressures due to their stiff sidewalls.

I have Michelin PS4S’s, and needed a few more psi’s to get them to feel right.

[EddieZ2]

2015 428i xdrive here. I just made the swap from run flats to Conti DWS 06 and they are a beautiful tire. More comfortable ride and overall performance is excellent. As we move into winter I am expecting very good performance from them especially when compared to the run flats. I picked up a BMW inflation kit which should suffice for any punctures except a full blowout. I am looking at tire pressures and it would be great to see what everyone else is running at.

[johnung]

Originally Posted by JLBMW

Just bought a new (for me) 2015 428ix GC with 36,000 miles on it. Really liking it, but, not liking the run-flats. Not my first BMW, but, first with RFTs. The right rear has a bubble and not holding air so looks like I'll be replacing all 4. Currently have the OEM ContiSport RFT 225/45R18 all around. Looking at buying the ContiExtreme Contact DWS06. Would really like a quieter, more comfortable tire.

1) What do you think about going with Non-Run Flats, and the DWS06?
2) If running Non-Run Flats, is anyone carrying a "space-saving" spare or just some "fix-a-flat"?

Any advice and opinions would be appreciated.

I know that keeping the run flats amounts to a religious argument on this forum, but here is my two cents. Mine is a daily driver that needs to deal with snow and potholes in NJ. Often a space-saving spare is not an option if you need at least 18 inch wheels for brake caliper clearance, i.e. if you have M Sport brakes or want to some day. On the other hand many drivers with 19 inch wheels in pot hole areas have complained about frequently damaged tires. I take my car on trips and decided that I didn't want to worry about carrying around a full size spare that takes up most of the trunk. I also didn't have the money or space to have second set of winter wheels/tires.

Once I decided that I was keeping the run-flats, I researched how to improve them. Advice from many sources was to ditch the stock Continentals/Pirellis for a much newer design, Bridgestone DriveGuards. DriveGuards are supposed to be quieter, handle better and especially perform much better in bad weather and snow. Additional advice that I got was to go to a wider DriveGuard tire on my stock 18 inch wheels. I've done this before on a previous German car and was very happy with the handling upgrade.

On my 2015 335ix, check if your car is the same, the stock 18.0x8.0 wheels with stock 225/45-18 tires can be upgraded to 235/45-18, or 245/40-18 or 245/45-18. Check with TireRack since they will know the pros and cons on your specific car. Call a couple of times because I find that the advice varies by the person you speak with. Even just going from 225's to 235's should give you a noticeable difference. On my 2015 335ix, the 245/40-18 should give the best handling performance of the options mentioned, while the 245/45-18 are a little taller so they fill the fender wells more to give a more dropped appearance. Usually you can go all the way to 255/40-18 in the rear but that requires picking up matching 8.5" wheels for the back end.

Hope this helps. Whatever you decide, please post your results. Have fun!

LATER ADDITION: HAHA (LAUGHING AT MYSELF) I REALLY SHOULDN'T RESPOND TO POSTS LATE AT NIGHT WITHOUT DOUBLE-CHECKING THE ORIGINAL DATE. MAYBE MY RESPONSE WILL HELP SOMEONE SOMETIME ANYWAY!

[tsm007]

Originally Posted by johnung

I know that keeping the run flats amounts to a religious argument on this forum, but here is my two cents. Mine is a daily driver that needs to deal with snow and potholes in NJ. Often a space-saving spare is not an option if you need at least 18 inch wheels for brake caliper clearance, i.e. if you have M Sport brakes or want to some day. On the other hand many drivers with 19 inch wheels in pot hole areas have complained about frequently damaged tires. I take my car on trips and decided that I didn't want to worry about carrying around a full size spare that takes up most of the trunk. I also didn't have the money or space to have second set of winter wheels/tires.

Once I decided that I was keeping the run-flats, I researched how to improve them. Advice from many sources was to ditch the stock Continentals/Pirellis for a much newer design, Bridgestone DriveGuards. DriveGuards are supposed to be quieter, handle better and especially perform much better in bad weather and snow. Additional advice that I got was to go to a wider DriveGuard tire on my stock 18 inch wheels. I've done this before on a previous German car and was very happy with the handling upgrade.

On my 2015 335ix, check if your car is the same, the stock 18.0x8.0 wheels with stock 225/45-18 tires can be upgraded to 235/45-18, or 245/40-18 or 245/45-18. Check with TireRack since they will know the pros and cons on your specific car. Call a couple of times because I find that the advice varies by the person you speak with. Even just going from 225's to 235's should give you a noticeable difference. On my 2015 335ix, the 245/40-18 should give the best handling performance of the options mentioned, while the 245/45-18 are a little taller so they fill the fender wells more to give a more dropped appearance. Usually you can go all the way to 255/40-18 in the rear but that requires picking up matching 8.5" wheels for the back end.

Hope this helps. Whatever you decide, please post your results. Have fun!

LATER ADDITION: HAHA (LAUGHING AT MYSELF) I REALLY SHOULDN'T RESPOND TO POSTS LATE AT NIGHT WITHOUT DOUBLE-CHECKING THE ORIGINAL DATE. MAYBE MY RESPONSE WILL HELP SOMEONE SOMETIME ANYWAY!

I had RFT on my E90 in North Jersey. The ride was extremely harsh. When I hit a pot hole or bump it felt like I broke my back and shattered my teeth.
I dumped those RFT & went with Pirelli P Zeros from Tire Rack. Couldn't be happier with the new setup. I have the P Zeros on my E90, E92, & F30. Great all season tires. It has tons of grip and great in the rain and snow. Highly recommended.
As far as a space saver, I keep a full size in my trunk. I have spare tires so I'm able to do so. If you don't, a spare tire is a good idea.

[chowser51]

My F33 has stock sized 18” Bridgestone Driveguards. Better than the Contis on my last BMW but I still don’t like it. I’m switching to goflats when these are ready to go unless I sell them with my wheels.

[jmef30]

Sorry to jump on an old post guys. but just wondering, if I am changing from run flat to non is the tyre size the same or can you go a bit smaller?

[floydarogers]

Originally Posted by jmef30

Sorry to jump on an old post guys. but just wondering, if I am changing from run flat to non is the tyre size the same or can you go a bit smaller?

Same size.

[R2Dad]

Great question, good thread here. Had 38,000 miles on RFTs and was tired of the pounding I was getting at freeway speeds over small potholes--really hammered the suspension such that I had to slow to 60 where known offsets in the concrete were. Stock RFTs were great in the snow, but numb on the freeway. After reading everyone here, bot the Michelin A/S 3+ and they were installed today. Even at slow speeds there is greater feedback, so I'm happy about that. I have the compressor, just need to duplicate Alohasurftoad's recommendation.

Note: I've been disappointed by the squeaks and rattles I've had since new, and attribute that to the RFTs--curious if these go away/are minimized with the new tires.

[Batang.Gapo]

On my Mazda6, I purchased ContiExtreme DWS06 last year to replace Pirelli Cinturato P7 All Season Plus. DWS06 was more comfortable and quieter compared to Cinturato P7.

My 330i M Sport Edition II came with 19" Bridgestone S001 Summer. My plan is to replace it with either ContiExtreme DW06 or Michelin AS+3 when time comes.

[BMWF30PGH]

Upgraded to 18's from stock 17's and put Conti PureContact LS on. They are amazing. This is a new tire. Firmer than my previous P7 Cinturato but very compliant over Pittsburgh's terrible roads, very quiet, and handle great. They are also fantastic in the snow, rain, ice. I cant say enough good things. I was going to go with the DWS06. I had them in the past and really enjoyed them. However I am very glad I gave these a try. I put a sludge kit with a compressor in my trunk just in case. I will never run another set of RFT on my car!

[jmef30]

Originally Posted by floydarogers

Same size.

Cheers for the reply just ordered some now.

[doctor80]

Why BMW states that non RFT will void transfer case warranty?
I'm worried, because I also want to switch to non RFT.

[dbright03]

Originally Posted by doctor80

Why BMW states that non RFT will void transfer case warranty?
I'm worried, because I also want to switch to non RFT.

I have the track handling option on my 340i which can come with or without run flats. When I bought the car it had run flats. I asked a dealer in here in Orange County, Calif. about switching to non run flats and he said it would void the warranty. However, when I was getting an upgrade installed down in El Cajon at a BMW with a tire center on site, my service manager there said that running run flats won't do anything to the warranty. I'm ditching the run flats next month and making the drive down to his shop to get some non run flats put on. If anything goes wrong, sounds like I'll have a dealer to back me up. As a warning, I'm not sure if that's because of the track handling package or not.


If you have other dealers around, you may want to call around to a few dealers to see if that's really the consensus, because there's a difference of opinion around here.

[doctor80]

Originally Posted by dbright03

I have the track handling option on my 340i which can come with or without run flats. When I bought the car it had run flats. I asked a dealer in here in Orange County, Calif. about switching to non run flats and he said it would void the warranty. However, when I was getting an upgrade installed down in El Cajon at a BMW with a tire center on site, my service manager there said that running run flats won't do anything to the warranty. I'm ditching the run flats next month and making the drive down to his shop to get some non run flats put on. If anything goes wrong, sounds like I'll have a dealer to back me up. As a warning, I'm not sure if that's because of the track handling package or not.


If you have other dealers around, you may want to call around to a few dealers to see if that's really the consensus, because there's a difference of opinion around here.

I just sent an email to BMW Canada, to give me YES or NO answer.

[doctor80]

Ok. By BMW Newmarket (Canada) it will not void. They sell themselves non RFT tires

[Sagiru]

I've got a 2014 335i M-Sport with 19" staggered tires. I ditched the Run Flats ASAP, and went with BF Goodrich Comp-2 AS. The difference was marked and positive. I also installed Koni FSD's. Together, it's a much more drive-able and better handling car.

I've got a Slime Kit (with compressor), as well as a scissors jack, in the back. I'm old school, so pulling, plugging, and refitting a tire is old hat to me. If need be. But 90% of punctures in modern tires are super-slow to leak, so you can almost always make it back to the comfort of your home base to do the repair.

[rhdh1049]

245/40/18’s Non runflats... will these work on a 2013 xdrive F30 sportline with 18x8 wheels

[MacklinUSOB]

Originally Posted by rhdh1049

245/40/18's Non runflats... will these work on a 2013 xdrive F30 sportline with 18x8 wheels

Yes.

[Mkswoosh]

Man, I've done coilovers, bm3, full cosmetics and still on rft. Ahahha I need to switch asap to go flats.

[rnkptl]

I'm in the same boat thinking about ditching my RF for NRF on my 2013 328 M Sport. Does changing the type of tire require an update to any system/setting? Thinking about getting it done from a tire shop as opposed to a dealer.

thx