[oksymoroni]

Help me make up my mind on what to get next for my 340i.

What would you do first if you only had money for one of these options?

MPPSK

or

KW Street Comfort or Bilstein PSS10 Coils and a set of Non-RFT


Long term I want to do both, but at the time I only have enough money for one.

[Zara]

Suspension because I just upgraded to H&R Sports and Bilstein B8s and I'm really satisfied with it

[kern417]

suspension and tires

[Stealth21]

Totally MPPSK! actually BMW should not sell 340i without it. I got MPPSK straight away and loving it. It totally transforms the car. The responsiveness and sound is addictive.

[vooonoo]

Improve ride quality, or add a fart can... seems pretty obvious to me

[cfm56d7b]

What vehicle do you have? Is it equipped with M Adaptive suspension?

[Seraphim38]

I have the MPPSK and love it. But I have the downpipe, full system and exhaust tips, not just some silly exhaust tips.

[kern417]

My primary problem with the MPPSK is the price. I'm all for a tune and exhaust, but aftermarket options are much more cost effective. I'm waiting for a proper aftermarket flash tune to be released for the B58.

[Al Bundy's Dodge]

Originally Posted by vooonoo

Improve ride quality, or add a fart can... seems pretty obvious to me

Couldn't have said it better myself

[oksymoroni]

Originally Posted by cfm56d7b

What vehicle do you have? Is it equipped with M Adaptive suspension?

I have a 2017 340i with a passive 704 suspension and stock Bridgestone RFT.

[oksymoroni]

Gotta say I'm a little surprised more people are choosing suspension/handling improvement over power/sound imrpovement with the MPPSK.

I also feel that the MPPSK is overpriced. I'd get the parts online but after the dealer install it'll probably be between $3200-$3500, which is a hefty bill.

I feel like I can get a really nice suspension and a set of Michelins for less than $3K.

[cfm56d7b]

Originally Posted by oksymoroni

I have a 2017 340i with a passive 704 suspension and stock Bridgestone RFT.

Passive 704 suspension is actually good enough and I would suggest replacing tires if you want better performance from "where rubber meets the road". Bridgestone RFTs are quite harsh (had these on my previous vehicle). If you prefer RFTs, Pirelli Cinturato would be my recommendation (performance - not all season tires).

MPPSK is a good option to consider since it will also be covered by warranty.

About coilovers ... I personally feel that unless coilovers represent a substantial upgrade in capabilities over 704 suspension, i.e. fully adjustable dampening and rebound controls (as an example), MPPSK is a more reasonable option.

[matty088]

Mppsk is really fun. But it doesn't make the car fast. FYI

[HLJustin]

I myself went MPPSK as soon as I could afford it and a high flow catted downpipe shortly after.

In my opinion regardless of which one you choose you'll be looking at what you didn't do none stop right after you finish. I thought I'd be set with mppsk but nope, I've been eyeing suspension mods for the last 6 months.

I say go with whichever one you think you'll enjoy the most. Suspension if you think you'll actually be able to capitalize on the better handling ie track or you're really that aggressive on the streets. Mppsk if you're looking to smile like a maniac from the sound as you drive.

As far as if mppsk is worth it. Personal preference. I did it bc I wanted warranty and guarantee of reliability and smoothness with no fuss or learning so I paid the premium for being lazy. It's also a pretty conservative exhaust in comfort mode with valves closed. Bonus is factory tune. Otherwise you'd have to go piggyback and I just want up for that yet for such a new engine.

Good luck

[B58 parts]

I always do wheels tires / suspension / brakes first. With this car .. the power level is sufficient but the driving dynamics are atrocious.

I don't get the mpk thing .. it's overpriced, and you need a catless dp to make any more, so there goes the warranty. Even the guy above, wanted the warranty, added a dp ... Lost the warranty. A car is faster for 3 months then you need more. So just go after market, get better parts for less money. Worst case you have to find/buy a used block/head and swap it in.

I wouldn't want to be I/e/dp/jb4 on runcraps/horrible stock suspension/brakes. But I'm sure some kids do it that way...

[jmg]

Tires. Always tires. What's the point of more power you can't put to the road? What's the point of going fast if you can't take a turn?

[jmg]

Originally Posted by oksymoroni

I have a 2017 340i with a passive 704 suspension and stock Bridgestone RFT.

Continental Extreme Sports or Michelin Pilot Sport 4S would be worthwhile upgrades. Keep the RFTs for when you sell/return the car or in case of emergency. Get a tire patch kit from amazon and keep it in your trunk. Make sure your AAA is up to date and enjoy!!!

[bmwgoat]

Originally Posted by oksymoroni

Help me make up my mind on what to get next for my 340i.

What would you do first if you only had money for one of these options?

MPPSK

or

KW Street Comfort or Bilstein PSS10 Coils and a set of Non-RFT


Long term I want to do both, but at the time I only have enough money for one.

Mppsk for sure. Got it on my 440i. Car seems for complete and deep. Should've came like this as stock

[alohasurftoad]

Originally Posted by YuminNuman

I always do wheels tires / suspension / brakes first. With this car .. the power level is sufficient but the driving dynamics are atrocious.

I don't get the mpk thing .. it's overpriced, and you need a catless dp to make any more, so there goes the warranty. Even the guy above, wanted the warranty, added a dp ... Lost the warranty. A car is faster for 3 months then you need more. So just go after market, get better parts for less money. Worst case you have to find/buy a used block/head and swap it in.

I wouldn't want to be I/e/dp/jb4 on runcraps/horrible stock suspension/brakes. But I'm sure some kids do it that way...

+1. susp 1st, then flash tune, high flow cat or catless dp, cat or axleback. you can do susp/flash/catlessdp/axleback all at once if you shop around right

[Calvin36]

Originally Posted by jmg

Tires. Always tires. What's the point of more power you can't put to the road? What's the point of going fast if you can't take a turn?

Yes. Tires make a world of a difference! But the extra noise is always nice. I would do tires and exhaust first. I don't really track my car so the suspension is sufficient.

[eluded]

I have run flats. They're not that bad but I am destroying them quickly so I can tell the wife they have worn out and I need to replace them.

But If you're the type a driver that notices the run flats and has the M passive suspension I am surprised that the Open differential is not mentioned.

If I had the money, I would upgrade to the M limited slip differential rather than replace a perfectly good set of runflat tires.

[kern417]

Originally Posted by eluded

I have run flats. They're not that bad but I am destroying them quickly so I can tell the wife they have worn out and I need to replace them.

But If you're the type a driver that notices the run flats and has the M passive suspension I am surprised that the Open differential is not mentioned.

If I had the money, I would upgrade to the M limited slip differential rather than replace a perfectly good set of runflat tires.

If possible i'd go coilovers and diff. I agree that I haven't found the run flat tires to be as bad as everyone says. I'm actually kind of concerned that non-runflats will make the car feel soft based on how much of a change people say they are.

But if OP has all-seasons then definitely change to summers, runflat or not.