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10-23-2020, 01:37 PM | #15 | |
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10-25-2020, 05:33 PM | #16 |
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Thanks for the comments guys. But I wanted to clarify that my initial question was about putting the same exact model/compound/size tire in the rear that is just worn differently than the fronts. Not a completely different model of tire.
I would also assume it's not the best to run a different compound front to back. |
10-25-2020, 07:19 PM | #17 |
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Depends your level of safety requirement. People do stupid things for looks and get by with it with generic daily driving, especially if leaving sufficient safety margin for unexpected. When you get closer to limits, eg. on track, or during reduced grip, such as when wet or in winter on ice/snow, though sometimes also on normal grip pavement during some emergency maneuvers, bad things to handling/suspension/braking/grip & grip balance/working of safety nannies may surface rather easy.
Still, due LSD diff, always worth to have in rear as similar tires as possible. In your case, if punctured rear is not repairable, if very budget strapped, put front tires in rear and get one new tire to be used in front. Or get two, and use both new in rear or other way around, both in front. Many punctures are repairable in tire shop .. unless emergency repair gunk is used on them or there is structural damage to tire sidewalls. Reason why one of my first "mods" was replacing stock tire repair gunk with spacesaver wheel. Win-win, cheaper fix/repair, and same wear level. |
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10-25-2020, 11:00 PM | #18 | |
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The consensus from the links I provided is that a significant difference in tread depth front to rear makes the cars safety systems more prone to activating. The level of activation is going to be somewhat speed-dependent due to the physics of circumference. If you're only going to be using the car at low speeds around town, it won't matter all that much. But higher speeds on the highway, the system will likely not be very happy
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10-26-2020, 08:05 AM | #19 |
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Ive always felt that the front wheels have the greatest potential negative consequences...%80 of the braking and all of the direction.
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10-26-2020, 08:18 AM | #20 |
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grumpysnapper: well, you should know well from your type of driving offroad, the less there grip is, the less mass transfer happens and "right" brake bias moves proportionally in direction closer to 50:50 (and opposite, if more grip, eg. stickier tires, more aero). Not just on gravel, but also in wet, or in extremes, on snow/ice. Then again i wouldn't understand those that switch off nannies when driving on public road, for ABS/EBD/SC to not help fix somewhat grip bias issues. Also IIRC EBD programming is rather understeer-ish (which for some trailbraking on track is unpleasant thing), so should do well even a bit more front biased grip.
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10-26-2020, 09:45 AM | #21 | |
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Anyway, if the rear starts doing any sort of unwanted movement on me in a low traction environment, I immediately go to correcting it with steering and limiting throttle inputs. With all the nannies on (I don't take chances when there's snow), the car is going to be doing its best to reign in any wheelspin or sliding so I can focus on keeping the car pointed in the right direction and/or coming to a stop. When this happened to me a few years ago I would not have had as easy a time keeping my car on my side of the double yellow line if my front tires were more worn than the rears. The nannies stopped the rear yaw and I had plenty of bite up front to keep the car pointed straight and staying out of the oncoming traffic lane. After a few seasons, and seeing where the tread depth is on the rears compared to the fronts, I'm likely replacing that rear pair, and the slightly worn tires that were the fronts get moved to the rear. As for the rest of the year on grippier tires, I try to keep up on regular rotations and maintaining tire pressures so that they wear as set. How worn they are would dictate if I'd replace a pair or the whole set if I had a puncture or failure.
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10-26-2020, 10:28 PM | #22 | |
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10-27-2020, 11:16 AM | #23 | |
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I was driving around with basically bald A052s in the rear and it was not a problem. Even in the rain i'd only run into issues when I passed over puddles with the bald rears, otherwise the car felt very planted |
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