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Technical Topics Wheels and Tires 225/40VR19.0 Rear Tires Performance

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      06-12-2019, 06:59 PM   #1
0xdq
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225/40VR19.0 Rear Tires Performance

I was so eager to close the deal and drive the M340i back home. I just realized that my M340i is equipped with Pirelli P7 all season rft and the rear size is 225/40VR19.0.

The majority of the M340i get 255 on the rear. I wonder how 225 would perform compared to the 255. Would there be a significant difference?

Thanks for your answer!

Last edited by 0xdq; 06-25-2019 at 11:16 AM..
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      06-12-2019, 09:01 PM   #2
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That's a major disservice to this car running those tires. Along with the smaller width tires, and crappy all seasons RFT's . You would definitely be limiting your vehicles capabilities in accelerating, cornering, and braking. If you get an m340i, the only tires I would be running are non RFT's Michelin Pilot Sports 4S staggered. Just my humble opinion . It's the absolute best "street " performance tires , bar none.
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      06-12-2019, 09:29 PM   #3
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Quote:
Originally Posted by BimmerFix View Post
That's a major disservice to this car running those tires. Along with the smaller width tires, and crappy all seasons RFT's . You would definitely be limiting your vehicles capabilities in accelerating, cornering, and braking. If you get an m340i, the only tires I would be running are non RFT's Michelin Pilot Sports 4S staggered. Just my humble opinion . It's the absolute best "street " performance tires , bar none.
Yeah I was actually shocked that they even equip 225 for the M340i. It's a leased car so I'm hesitating to upgrade the rim, would you think switching the 225 to 245 on the original 19x8 rim is a good idea?

Last edited by 0xdq; 06-13-2019 at 11:14 AM..
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      06-14-2019, 09:33 PM   #4
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Ended up ordering the factory 792M 19x8.5 Rim for the rear and full set of Michelin PS4S tire staggered set up
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      06-15-2019, 07:23 AM   #5
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Quote:
Originally Posted by BimmerFix View Post
That's a major disservice to this car running those tires. Along with the smaller width tires, and crappy all seasons RFT's . You would definitely be limiting your vehicles capabilities in accelerating, cornering, and braking. If you get an m340i, the only tires I would be running are non RFT's Michelin Pilot Sports 4S staggered. Just my humble opinion . It's the absolute best "street " performance tires , bar none.
Agreed
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      06-15-2019, 12:22 PM   #6
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Agreed
Yeah, as I'm breaking in the engine I'm gradually pushing the gas pedal harder. The car could easily lose traction. Not to mention it's so embarrassing to have 225 printed on 4 tires when a Civic parking next to me having 235 square set up. I ordered the stock 792M 19x8.5 from dealer and full set of Michelin PS4S from discount tire, going to have them installed next week!
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      06-19-2019, 11:58 PM   #7
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Good move. Yes you're out of pocket more but you'll enjoy the car more.
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      06-23-2019, 07:21 PM   #8
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Good move on replacing RFTs. Its always been my first move on any car. After all, is that what Road Side Assistance is for!!
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      06-25-2019, 09:27 AM   #9
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Pretty happy about the PS4S!
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      06-25-2019, 09:50 AM   #10
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Quote:
Originally Posted by 0xdq View Post
I was too eager to get the M340i deal done and I missed checking the tire spec. I just realized that my M340i is equipped with Pirelli P7 all season rft and the rear size is 225/40VR19.0.

The majority of the M340i get 255 on the rear. I wonder how 225 would perform compared to the 255. Would there be a significant difference?

Thanks for your answer!
Mine came like that. I never saw the car in person and they told me it had the staggered setup but it didn't. I made them swap all 4 out with another M340i that had the staggered setup. I will say that the car was way more fun with the 225s on the rear as far as getting it sideways and messing around. Now with the 255s it has to much grip and not enough power to play. Time to tune it....lol
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      06-25-2019, 11:04 AM   #11
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Quote:
Originally Posted by senderhomes View Post
Mine came like that. I never saw the car in person and they told me it had the staggered setup but it didn't. I made them swap all 4 out with another M340i that had the staggered setup. I will say that the car was way more fun with the 225s on the rear as far as getting it sideways and messing around. Now with the 255s it has to much grip and not enough power to play. Time to tune it....lol
You made very valid point lol. Yes, I did feel I could easily mess around with the 225s. But the car looks weak with the 225s on the rear. Even if we don't speak of performance, it's just visually too narrow... I attached a photo of my M340i and my colleague's C43 parking side by side.

I think you made the right choice. I signed all the paperwork so it's too late(my first performance car so definitely lack experience)...ended up paying extra $3000 to learn the hard lesson...
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      06-25-2019, 11:08 AM   #12
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Quote:
Originally Posted by 0xdq View Post
Quote:
Originally Posted by senderhomes View Post
Mine came like that. I never saw the car in person and they told me it had the staggered setup but it didn't. I made them swap all 4 out with another M340i that had the staggered setup. I will say that the car was way more fun with the 225s on the rear as far as getting it sideways and messing around. Now with the 255s it has to much grip and not enough power to play. Time to tune it....lol
You made very valid point lol. Yes, I did feel I could easily mess around with the 225s. But the car looks weak with the 225s on the rear. Even if we don't speak of performance, it's just visually too narrow... I attached a photo of my M340i and my colleague's C43 parking side by side.

I think you made the right choice. I signed all the paperwork so it's too late(my first performance car so definitely lack experience)...ended up paying extra $3000 to learn the hard lesson...
Shit for another 1500 you should have got the 795s!!!! I want them so bad but 4200 seems steep at the moment. Yes it looked so pathetic with the 225s on rears I couldn't stand it. I had to annoy the bmw Mamager for 2 weeks to get them to agree to swap to the bigger 8.5 inch rear with 255s
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      06-25-2019, 11:24 AM   #13
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Quote:
Originally Posted by senderhomes View Post
Shit for another 1500 you should have got the 795s!!!! I want them so bad but 4200 seems steep at the moment. Yes it looked so pathetic with the 225s on rears I couldn't stand it. I had to annoy the bmw Mamager for 2 weeks to get them to agree to swap to the bigger 8.5 inch rear with 255s
It was $1600 for 2 wheels: 792m 19x8.5 on the rear. And $1300 for 4 tires: Michelin PS4S 225/40/R19 for the front and 255/35/R19 for the rear.

I had to get both wheels and tires from BMW. Those BMW approved PS4S are out of stock everywhere, even Michelin didn't have them in stock. Luckily the guy at BMW parts was super cool and he didn't overcharge me too much.

Funny thing was that the BMW service department tried to rip me off, they quoted me $1050 to swap the 4 tires:

$200 installation
$250 alignment
$700 TPMS

So I just walked away and had America's tires do it for me. It cost about $100+.

I should have done what you did haha!

Last edited by 0xdq; 06-25-2019 at 11:38 AM..
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      06-26-2019, 01:08 PM   #14
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$200 for install not so bad but $250 for an alignment on a new car and $700 for TPMS that can just be swapped. Truly amazing. I know dealers need to pay the bills but come on.

Quote:
Originally Posted by 0xdq View Post
It was $1600 for 2 wheels: 792m 19x8.5 on the rear. And $1300 for 4 tires: Michelin PS4S 225/40/R19 for the front and 255/35/R19 for the rear.

I had to get both wheels and tires from BMW. Those BMW approved PS4S are out of stock everywhere, even Michelin didn't have them in stock. Luckily the guy at BMW parts was super cool and he didn't overcharge me too much.

Funny thing was that the BMW service department tried to rip me off, they quoted me $1050 to swap the 4 tires:

$200 installation
$250 alignment
$700 TPMS

So I just walked away and had America's tires do it for me. It cost about $100+.

I should have done what you did haha!
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