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      11-21-2012, 06:41 AM   #45
Pacemaker1000
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Is it worth me downsizing from 19's to 18's before running non-RFT's?
Or will the difference be negligable?

Last edited by Pacemaker1000; 11-21-2012 at 03:09 PM.
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      11-21-2012, 10:48 AM   #46
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Quote:
Originally Posted by Pacemaker1000 View Post
Is it worst me downsizing from 19's to 18's before running non-RFT's?
Or will the difference be negligable?
Dunno. Still have the stock 19" RFTs on my Z4. I'll let you know when I run out of tread and replace them with regular tires
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      11-21-2012, 11:17 AM   #47
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Dunno. Still have the stock 19" RFTs on my Z4. I'll let you know when I run out of tread and replace them with regular tires
That will be a long while as the RFT don't grip the road..they hop it!

Having PSS for the last 2 days has shown what a difference a tire can make.
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      11-23-2012, 10:05 PM   #48
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the eighteen in wheels are a softer ride than the 19's, so it seems to make sense that the tires would be an even great help in that area, so you dont get a jarring kick back from bumps.
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      12-06-2012, 06:37 PM   #49
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nothing but great reviews about these tires, almost bald
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      12-06-2012, 07:29 PM   #50
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Originally Posted by SpeedDemon7 View Post
nothing but great reviews about these tires, almost bald
huh???
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      12-06-2012, 07:36 PM   #51
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huh???
He probably meant his tires are almost bald, so it's time to get the PSS
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      12-06-2012, 10:43 PM   #52
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Thanks for deciphering that.
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      01-12-2013, 01:01 PM   #53
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Quote:
Originally Posted by bmwmick View Post
Blu,
I would not be worried about mixing them that way.......unless you plan to set records on Santa Susana Pass or Box Canyon roads. It's counter intuitive looking at the treadwear numbers 140 vs 300 but the Michelins sure seem to stick better than the Potenzas ever did.

Mick
Update, i talked to my BMW service guy and he said would be fine.
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      01-22-2013, 09:29 PM   #54
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Thumbs down

WTF?
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      01-13-2014, 04:20 PM   #55
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My car also has 255/40/17 tires, Unless i'm getting something wrong i can't use PSS on it right?
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      01-14-2014, 10:44 AM   #56
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So, dumb question. But where does the spare go?? And I am guessing you would need to purchase a jack?
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      01-14-2014, 10:54 AM   #57
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I think most ppl who go non RFT rely on the BMW assist phone # and tire mobility kit
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      01-14-2014, 01:50 PM   #58
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I'm in the same boat as Pacemaker1000. I'm currently on stock 19" rims with Potenza RFTs and am seriously considering switching over to (stock-sized) PSS tires once the Potenzas are throw-away. I'd use the same rims and buy a Continental foam/pump kit for the trunk ($79 USD from Tire Rack and good for 4 years). I'd really like to hear feedback from someone who has personally done this.
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      01-14-2014, 02:30 PM   #59
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I'm in the UK. I replaced my tyres with Goodyear asymmetric 2's non RFT.

I hit a pot hole which gashed the side wall about 4 inches, and the rear by 1 inch.
Pooring with rain, dark in the middle of the countryside, i said "Oh, Well" and drove home!
Half mile from home having travelled 9 miles the tyre came of the front rim.
The tyre sheared off leaving an inch of rubber around the rim, protecting it.
Suprisingly no damage to either rim, just fitted two new tyres.

Watching all those US programs about Police car chases gave me the confidence the car would get me home!
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      01-14-2014, 03:01 PM   #60
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Quote:
Originally Posted by Putzo
I'm in the same boat as Pacemaker1000. I'm currently on stock 19" rims with Potenza RFTs and am seriously considering switching over to (stock-sized) PSS tires once the Potenzas are throw-away. I'd use the same rims and buy a Continental foam/pump kit for the trunk ($79 USD from Tire Rack and good for 4 years). I'd really like to hear feedback from someone who has personally done this.
Putzo I did exactly that but on 18" wheels. Mobility kit and no flats x 2 years No regrets either as the ride is so much better. Although someone just posted regarding the 3G rft's and how they're not so rock hard anymore.
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      01-14-2014, 03:23 PM   #61
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My PSSs (235/35ZR19 & 265/30ZR19 ) were $1200 USD total installed price.
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Last edited by TWiley; 01-14-2014 at 04:05 PM.
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      01-14-2014, 05:58 PM   #62
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Quote:
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My PSSs (235/35ZR19 & 265/30ZR19 ) were $1200 USD total installed price.
I see you went a bit wider than the stock size, which I wouldn't do, but that's cool. How did the ride change for you?
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      01-15-2014, 02:37 PM   #63
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Amazing difference. So much smoother when driving a on less than perfect road surface. No regrets.
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      01-15-2014, 05:10 PM   #64
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Amazing difference. So much smoother when driving a on less than perfect road surface. No regrets.
Thanks for the feedback.
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      01-20-2014, 12:16 PM   #65
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Quote:
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My car also has 255/40/17 tires, Unless i'm getting something wrong i can't use PSS on it right?
Can someone help me?, I'd really like to know if i can put PSS on my wheels.
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      01-20-2014, 01:16 PM   #66
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Quote:
Originally Posted by JavierBayArea View Post
Can someone help me?, I'd really like to know if i can put PSS on my wheels.
It seems like the 255/40/17 size isn't available for the PSS. You could try the 245/40/17 size if you were really set on the PSS

However, if I was in your situation I would go with BFGoodrich g-force Rival, or Bridgestone RE-11A, or Dunlop Direzza ZII. This would let you keep the stock staggered size, or maybe go to 235 front and 265 rear

The Michelin PSS is a nice tire but there are many other choices that provide more dry grip and better heat resistance, so I would personally go to another brand, rather than take the slightly less rear contact patch
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