AWBoy

I have to make a VERY quick decision if I want to replace both rears with regular Pilot Sports or replace just the dead one with a new PS2 and leave the other one on (it's at about 50% tread life).

Someone on the forum said that Pilot Sports in the back and PS2s upfront worked extremely well. Thoughts?

__________________
"It's funny how slow the M5 feels at 30 until you realize you're actually doing 70"

2002 Carbon Black M5
-275 PS2s on 4 corners
-Black/Aluminum Extended Leather Interior
-M-Audio
-Dinan S1 Software
-Redneck Exhaust: Straight pipes from the resonator back
-Stoptech Slotted Rotors w/ Axxis Ultimate Pads and steel brake lines
-Eibach front and rear sway bars w/ TC Brackets
-Front poly bushings

greg

I don't think you should replace only one side if you have 50% wear on the other. I suspect that if the tires don't rotate at (almost) exactly the same speed, you will add signficant wear on the diff.

__________________
'00 M5 - The Ultimate Ultimate Driving Machine! Greg's M5 Page
'01 996 TT - Greg's Porsche Turbo Page
'00 A6 4.2 - doesn't deserve a web page

AWBoy

Yeah, those are my thoughts too.

So then:

PS2s on the rear (will have to give up the beast for a night! NOOOO!!!!)

or

Regular Pilot Sports on the rear (can get done this afternoon)

__________________
"It's funny how slow the M5 feels at 30 until you realize you're actually doing 70"

2002 Carbon Black M5
-275 PS2s on 4 corners
-Black/Aluminum Extended Leather Interior
-M-Audio
-Dinan S1 Software
-Redneck Exhaust: Straight pipes from the resonator back
-Stoptech Slotted Rotors w/ Axxis Ultimate Pads and steel brake lines
-Eibach front and rear sway bars w/ TC Brackets
-Front poly bushings

eljockvis

hi
i run pilot sport 2 on the front and pilot sport on the rear,great combination!

AWBoy

Why did you go with that combination? Have you ever tried PS2s in the rear?

__________________
"It's funny how slow the M5 feels at 30 until you realize you're actually doing 70"

2002 Carbon Black M5
-275 PS2s on 4 corners
-Black/Aluminum Extended Leather Interior
-M-Audio
-Dinan S1 Software
-Redneck Exhaust: Straight pipes from the resonator back
-Stoptech Slotted Rotors w/ Axxis Ultimate Pads and steel brake lines
-Eibach front and rear sway bars w/ TC Brackets
-Front poly bushings

AWBoy

Since I don't think BMW is going to have time to replace 2 tires today, I just went ahead and ordered the PS2s. No beast for me tonight

__________________
"It's funny how slow the M5 feels at 30 until you realize you're actually doing 70"

2002 Carbon Black M5
-275 PS2s on 4 corners
-Black/Aluminum Extended Leather Interior
-M-Audio
-Dinan S1 Software
-Redneck Exhaust: Straight pipes from the resonator back
-Stoptech Slotted Rotors w/ Axxis Ultimate Pads and steel brake lines
-Eibach front and rear sway bars w/ TC Brackets
-Front poly bushings

ard

Did you get the regular version or the MBZ version??

All you need to know:
No More PS2's?

There are pictures of the MBZ version in the thread- it is on the tire sidewall, maybe not the receipt.

AWBoy

The place I ordered it from never mentioned MBZ and I just asked for Michelin Pilot Sport PS2s and they said they can get em by the morning.......dunno I guess. I'll read the receipt very closely when I pick them up in the morning.

__________________
"It's funny how slow the M5 feels at 30 until you realize you're actually doing 70"

2002 Carbon Black M5
-275 PS2s on 4 corners
-Black/Aluminum Extended Leather Interior
-M-Audio
-Dinan S1 Software
-Redneck Exhaust: Straight pipes from the resonator back
-Stoptech Slotted Rotors w/ Axxis Ultimate Pads and steel brake lines
-Eibach front and rear sway bars w/ TC Brackets
-Front poly bushings

Habu

AWBoy,

There's been discussion on the limited availablity of PS2 for the rears. Check this thread.

No More PS2's?

Since you're getting them for the rear, you probably will be ok.

Bob

ard

For every ONE MILLIMETER in tread depth mismatch, you will get a differential in the relative revolutions between tires of roughly 2.4 revolutions per mile.

A one quarter inche mismatch (6mm diff in roling radius) will give you 761 revolutions per mile versus 775... a difference of 15 revs per mile.

At 60 mph, or one mile per minute that is one rev every 4 seconds or one-quarter HZ....

what's that mean?

beats me, but seems pretty slight.

hey, what if you ran the more worn tire with 2 psi more pressure?


A

M5 Dave

The wheel speed sensors may detect the difference and it may cause DSC to to kick in, apply brake pulses to the faster turning wheel. Also may cause "tire defect" indicator.

__________________
M5 Dave

2000 TiSilver M5 - Supersprint Headers, Tubi Catback Exhaust, Active Autowerke Tuned ECU, Active Autowerke CAI, Custom Hi-Flow Air Filtration, UUC 11" Performance Organic Clutch/Aluminum Flywheel, UUC Short Shifter, UUC DSSR, UUC Clutch Stop, UUC Tranny Mounts, Strong Strut Front Strut Bar, Riken Raptor Tires, AXXIS Deluxe Plus Brake Pads, UUC Shifter Knob, DEPO Projector39 HID DDE Clear Corner Headlights, Xtec HID Xenon Low beams, High Beams and Fogs (six ballasts), MK4-16:9-V28 Nav Upgrade, Bimmian Interior Xenox Lighting, V1 Radar Locater.