CorrectUnless I'm mistaken however, the relative position of the wheel/tyre to knobbly is fixed and independent of the other suspension components/setup.
Dave
shredded tyres - the last straw!
Now that you explain it, it does make sense. and I stand corrected. Thinking aout it, I remember some ultra slow mo pictures of a f1 car hitting a kerb and the whole tyre was wobbling.Daveperc wrote:Sorry guys, but not correct. Think of the tyre and wheel as two concentric cylinders. The lateral force exerted by the road to change the direction of the car is applied to the tyre tread by the road. To transfer the shear force to the wheel (and car) the whole tyre tread is displaced laterally, deforming both tyre walls - the air pressure, and the deformed shape excert the force which is principally transmitted by changes in tension in the fibres in the tyre.Extremely good point Monoi, the tyre wall should only undergo deformation when entering and exiting the contact footprint. The infamous knobbly bit is at the furthest point from the footprint, ergo, no tyre deformation?!?!
I'm not a tyre engineer, but I am a Chartered MechE .
Dave
So tyre pressures are important!
1. GOOD FIT : Michelin PS2 R01 255/35/19 - Shoppinit
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam and Bilko (knobbly bit removed just incase)
6. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam
7. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
8. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
10. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
11. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
12. GOOD FIT: Cooper Xeon 255-35 19. Monoi
OI! - You lot. Stick your last known psi figures in now the discussion has changed course. . .pretty please?
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam and Bilko (knobbly bit removed just incase)
6. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam
7. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
8. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
10. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
11. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
12. GOOD FIT: Cooper Xeon 255-35 19. Monoi
OI! - You lot. Stick your last known psi figures in now the discussion has changed course. . .pretty please?
1. GOOD FIT : Michelin PS2 R01 255/35/19 - Shoppinit
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam - 42psi
6. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
7. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam - 38psi in summer 40psi in winter
8. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
10. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
11. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
12. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
13. GOOD FIT: Cooper Xeon 255-35 19. Monoi
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam - 42psi
6. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
7. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam - 38psi in summer 40psi in winter
8. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
10. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
11. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
12. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
13. GOOD FIT: Cooper Xeon 255-35 19. Monoi
No matter where you go, there you are.
1. GOOD FIT : Michelin PS2 R01 255/35/19 - Shoppinit - 45 psi
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam - 42psi
6. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
7. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam - 38psi in summer 40psi in winter
8. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
10. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
11. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
12. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
13. GOOD FIT: Cooper Xeon 255-35 19. Monoi
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam - 42psi
6. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
7. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam - 38psi in summer 40psi in winter
8. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
10. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
11. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
12. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
13. GOOD FIT: Cooper Xeon 255-35 19. Monoi
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Another minor aside but I've carried one of these around for the last few years. Seems reliable and accurate.
http://www.amazon.co.uk/RACE-PROFESSION ... B000VZ8S26
http://www.amazon.co.uk/RACE-PROFESSION ... B000VZ8S26
The TPMS work very well I think. I have a slow puncture on my front left wheel and the TPMS alarm goes off as soon as it hits 37 psi.
The guages are good, too, but I know which is easier to use at 150mph
The guages are good, too, but I know which is easier to use at 150mph
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
When I change rubber I will save a few pennies and get the TPM sensors someone linked me to a few weeks ago. . .
http://www.alloywheelsdirect.net/option/tpm_sensors
Anyone bought these? Are they new?
http://www.alloywheelsdirect.net/option/tpm_sensors
Anyone bought these? Are they new?
I tried to but they couldn't get stock but they are the same manufacturer as OEM. If you have no luck, I bought the same ones from tyresensors.com (talk to Amy Hasson), but it still took 6 weeks to get in stock. I saved about £60 over the same Audi boxed kit.Digger wrote:When I change rubber I will save a few pennies and get the TPM sensors someone linked me to a few weeks ago. . .
http://www.alloywheelsdirect.net/option/tpm_sensors
Anyone bought these? Are they new?
I ran TPMSless for 2-3 months with a slow leak in one the rears, it used to do my head in even though I would repressurised before EVERY trip. Now I only check the pressures every 2-3 weeks, I usually check tyre wear at the same time.
Peace of mind motoring.
No matter where you go, there you are.
2.5 barsShoppinit wrote:1. GOOD FIT : Michelin PS2 R01 255/35/19 - Shoppinit - 45 psi
2. KNOBBLED: Michelin PS2 255/35/19 - Shoppinit
3. KNOBBLED: VRED Ultrasessenta 255/35/19 - SuicideAl
4. GOOD FIT : Vred Ultrac Sessanta 275/30/19 Daveperc (and others)
5. GOOD FIT : Vred Ultrac Sessanta 255/35/19 bam_bam - 42psi
6. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
7. GOOD FIT : Good Year F1 Asymmetric 275/30/19 bam_bam - 38psi in summer 40psi in winter
8. KNOBBLED: Michelin PS3 255/35/19 - Shoppinit
9. GOOD FIT : Vred Ultrac Sessanta 255/35/19 PhilRoach (h&r's)
10. GOOD FIT : Vred Ultrac Sessanta 255/35/19 Bilko (knobbly bit removed just incase)
11. GOOD FIT : Vred Ultrac warpdrive 275/30/19 gravity
12. GOOD FIT: ContiSportContact 3 255/35/19 backed off from 45 to 42PSI! - Digger, a good fit afaik, need replacing soon
13. GOOD FIT: Cooper Xeon 255-35 19. Monoi
That's not much. Lower than the spec, IIRC.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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