Those with Pilot Super Sports

blschaefer1 · 07-27-2013, 06:18 PM

I'm currently running about 2 psi higher than stock recommendation for RFT's. 38 front 44 rear.

Anyone have other experiences or opinions ?

HerrK · 07-27-2013, 06:50 PM

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.

itf joegun · 07-28-2013, 01:36 AM

Michelin PSS 19" 225/255 here. Pressure is 33 psi all around. Works perfect.

Vintage · 07-28-2013, 08:03 AM

glad I read this - I will lower the rear pressure from the current setting of 42

blschaefer1 · 07-28-2013, 11:04 AM

Ditto. It appears I've been running them too high.

itf joegun · 07-28-2013, 12:22 PM

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...

tranquility · 07-28-2013, 12:59 PM

Subscribed to get more views. I'm experimenting with 34/40, seems ok.

jparnes1 · 07-28-2013, 01:42 PM

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.

tranquility · 07-28-2013, 02:01 PM

Quote:

Originally Posted by jparnes1

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.

Aren't you a pirate? Why you taking the safe route? LOL

bmwmick · 08-05-2013, 01:05 PM

I experimented with several pressures and finally settled on 36psi front and rear.

Mick

BlueZ4Arizona · 08-05-2013, 02:17 PM

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. ????

cvc 22349a · 08-13-2013, 11:14 PM

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..

jparnes1 · 08-14-2013, 05:44 AM

Quote:

Originally Posted by cvc 22349a

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..

I did not notice any negative changes. If anything, the PSS are better tires. The car handles at least as well as it did with stock tires.

blschaefer1 · 08-14-2013, 09:49 AM

In my case, the car handles better in every respect. Ride quality is improved too. Grip is in a completely different league with the PSS.

cvc 22349a · 08-14-2013, 10:41 AM

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.

blschaefer1 · 08-14-2013, 03:23 PM

Quote:

Originally Posted by cvc 22349a

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.

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.

cvc 22349a · 08-14-2013, 07:04 PM

[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"

07-27-2013, 06:18 PM	#1
blschaefer1 First Lieutenant 205 Rep 393 Posts Drives: 2022 X3 xDrive 30i Join Date: Jun 2011 Location: Prescott, AZ iTrader: (1)	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 ?
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07-27-2013, 06:50 PM	#2
HerrK Captain 42 Rep 640 Posts Drives: 21 X5 40i, 77 R100Rs Join Date: Dec 2009 Location: AZ iTrader: (0)	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. __________________ HerrK - 2021 X5 40i M Sport l PCD l Atlantis Blue/Ext'd Tartufo Merino l M Sport w/blue Calipers l Matt Popular l HK Sound l 740's l Exec & Drive Pro Pack Sold w/Great Memories - E89 Z4 l ED 2010 l 2011 35i l Crimson/Ext'd Coral Red w/Alum l 6 sp MT l Prem Sound l Sport Pack l 296's
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07-28-2013, 01:36 AM	#3
itf joegun Lieutenant 169 Rep 428 Posts Drives: G29 Z4 M40i; G05 X5 M50i Join Date: Apr 2010 Location: Rhineland Palatinate - Germany iTrader: (0)	Michelin PSS 19" 225/255 here. Pressure is 33 psi all around. Works perfect. __________________ Best regards, Jochen Click signature for current and previous cars.
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07-28-2013, 08:03 AM	#4
Vintage Colonel 379 Rep 2,588 Posts Drives: BMW G80 (MT), 718 Spyder Join Date: Aug 2009 Location: Austin, Texas iTrader: (0)	glad I read this - I will lower the rear pressure from the current setting of 42
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07-28-2013, 11:04 AM	#5
blschaefer1 First Lieutenant 205 Rep 393 Posts Drives: 2022 X3 xDrive 30i Join Date: Jun 2011 Location: Prescott, AZ iTrader: (1)	Ditto. It appears I've been running them too high.
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07-28-2013, 12:22 PM	#6
itf joegun Lieutenant 169 Rep 428 Posts Drives: G29 Z4 M40i; G05 X5 M50i Join Date: Apr 2010 Location: Rhineland Palatinate - Germany iTrader: (0)	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... __________________ Best regards, Jochen Click signature for current and previous cars.
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07-28-2013, 12:59 PM	#7
tranquility sportscars only 3244 Rep 3,195 Posts Drives: 2011 Z4 sDrive 35i Join Date: Aug 2007 Location: Montréal iTrader: (0)	Subscribed to get more views. I'm experimenting with 34/40, seems ok.
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07-28-2013, 01:42 PM	#8
jparnes1 Colonel 243 Rep 2,387 Posts Drives: 2016 340i, 2012 Z4 35i Join Date: Jan 2010 Location: NY iTrader: (1)	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. __________________ 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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08-05-2013, 01:05 PM	#10
bmwmick Second Lieutenant 18 Rep 237 Posts Drives: '97 Z3,'11 Z4 35i,'90 C4 Vette Join Date: May 2011 Location: AZ/CA iTrader: (1)	I experimented with several pressures and finally settled on 36psi front and rear. Mick __________________ Mick 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
BlueZ4Arizona Private First Class 4 Rep 101 Posts Drives: 2009 Z4 sDrive 35i Join Date: Jul 2009 Location: Chandler, AZ iTrader: (0)	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
cvc 22349a Colonel 164 Rep 2,556 Posts Drives: 335i Join Date: Sep 2007 Location: SF Bay iTrader: (11)	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.. __________________ 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, 09:49 AM	#14
blschaefer1 First Lieutenant 205 Rep 393 Posts Drives: 2022 X3 xDrive 30i Join Date: Jun 2011 Location: Prescott, AZ iTrader: (1)	In my case, the car handles better in every respect. Ride quality is improved too. Grip is in a completely different league with the PSS.
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08-14-2013, 10:41 AM	#15
cvc 22349a Colonel 164 Rep 2,556 Posts Drives: 335i Join Date: Sep 2007 Location: SF Bay iTrader: (11)	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. __________________ 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, 07:04 PM	#17
cvc 22349a Colonel 164 Rep 2,556 Posts Drives: 335i Join Date: Sep 2007 Location: SF Bay iTrader: (11)	[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" __________________ 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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