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07-27-2013, 06:18 PM | #1 |
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Those with Pilot Super Sports - what pressures?
I'm currently running about 2 psi higher than stock recommendation for RFT's. 38 front 44 rear.
Anyone have other experiences or opinions ? |
07-27-2013, 06:50 PM | #2 |
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Michelin PSS here - 235/40x19 & 265/35x19 F/R. Driving solo as is most of the case for commuting & running errands, I settled on 34/38 F/R, after doing the "Chaulk Test" on a couple of occasions. When the wife & I go on a road trip, I bump them up to 38/42 and take the BMW jack kit from the wife's 325, the Stop & Go Plug Kit and the Michelin Mobility Kit.
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07-28-2013, 01:36 AM | #3 |
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Drives: G29 Z4 M40i; G05 X5 M50i
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Michelin PSS 19" 225/255 here. Pressure is 33 psi all around. Works perfect.
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07-28-2013, 12:22 PM | #6 |
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Drives: G29 Z4 M40i; G05 X5 M50i
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It is always a Problem if you change tires to non-runflat until the proper tire pressure is known...
For the Z4 I got the values from a German tuner after changing my Suspension (Eibach + H&R)... On the other Hand this is also exactly the pressure of my former car, a M3 E92, which also has PS2 non-runflats from the factory and weight nearly the same like the Z435is. So I think the figures are accurate... |
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07-28-2013, 01:42 PM | #8 |
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I just changed my rear non-rft PSS after 16K miles running at stock psi of 42. the tread of the old tires showed a normal wear pattern, so I'm sticking to 42 psi. You track hounds can do as you like.
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2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus.
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA. |
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07-28-2013, 02:01 PM | #9 |
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08-05-2013, 01:05 PM | #10 |
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I experimented with several pressures and finally settled on 36psi front and rear.
Mick
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2011 35i 6-speed, ///M Sport, Deep Sea Blue, Black leather, Carbon trim, Cold Weather package, Premium package, 6CD changer. Delivered 7/15/11. Michelin Pilot SuperSport tires 10/24/12 Tucson,AZ/Santa Paula,CA |
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08-05-2013, 02:17 PM | #11 |
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Pilot Super Sports
36 front 42 rear Didn't try to get cute with pressure. Tire wear has been excellent. 10k miles so far and plenty of tread left. I'm not sure why non-runflats should/would have a different PSI recommedation than runflats. ???? |
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08-13-2013, 11:14 PM | #12 |
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I'm considering buying a z435 even though I swore I'd never buy another car engineered around runflats. Question for you guys who've switched to traditional PSS tires: How much does switching to non-rft's affect steering response? Making that switch in my 335 changed the steering response from sharp to sluggish which led me down a slippery slope of suspension modifications..
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08-14-2013, 05:44 AM | #13 | |
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Quote:
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2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus.
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA. |
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08-14-2013, 10:41 AM | #15 |
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I know handling and grip are vastly improved when switching to PSS from rft's. I'm wondering how the switch affected steering response. On the E90 steering response becomes sluggish.
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS |
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08-14-2013, 03:23 PM | #16 |
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My prior car was a 135i, and when I made the move to PSS's, I did notice the turn-in was slightly less precise, particularly at low speed. I've noticed no such effect on the Z4. I'm on 19" if it make a difference.
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08-14-2013, 07:04 PM | #17 |
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[QUOTE=blschaefer1;14497266]My prior car was a 135i, and when I made the move to PSS's, I did notice the turn-in was slightly less precise, particularly at low speed. I've noticed no such effect on the Z4. I'm on 19" if it make a difference.[/QUOTE]
Thanks and I'm sure 19" makes a difference since there's less sidewall flex than 18"
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
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