Lexus LS 2012 AWD - ? New tires
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From: WI
Lexus LS 2012 AWD - ? New tires
My 2012 Lexus LS has about 49000 miles on it . I bought it a year ago when it had 40, 000 miles on it. It presumably has the original tires. One tire was damaged and had a tear in the sidewall, ( Hit the sharp iron edge of a drain) . I have driven 250 miles on the full size spare tire. Should I replace all four tires. I have heard that is necessary in an AWD vehicle.
Last edited by DM2; Aug 30, 2016 at 07:16 AM.
Pole Position
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From: New Hampshire
Technically you should, especially whereas you have AWD. Different tread design/depth at different wheels, changes rolling resistance, which could lead to damage to the drive train (so they say). Also there is a chance you could effect your ABS, traction control and stability assist - the wheel speed sensors could register different signals.
Pit Crew
Joined: Mar 2011
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From: Stamford CT & Weeki Wachee FL
I agree. Not as much because of possible computer confusion, but because your other tires are ~2/3 worn out already. If you replace just one, then in in another 20K you'll be wondering whether to replace just 3. Treat your car to some new shoes...
Pole Position
Joined: Mar 2016
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From: Missouri
Technically you should, especially whereas you have AWD. Different tread design/depth at different wheels, changes rolling resistance, which could lead to damage to the drive train (so they say). Also there is a chance you could effect your ABS, traction control and stability assist - the wheel speed sensors could register different signals.
BTW, shouldn't we all be getting five new tires every time we replace?
Last edited by comotiger; Aug 31, 2016 at 07:24 AM. Reason: wrong tire model
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Lexus Fanatic
Joined: Jan 2014
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From: BC Canada
Yeah, I am worried about this in my case. I have three Michelin MXM4s that were installed about 20,000 miles ago by first owner. My 4th tire is a Pirelli Pzero that was probably installed about 9000 miles ago by the dealer I bought from. My spare is another Pzero, but not the same model as the 4th tire, and I don't know how old it is. All tires have lots of tread, and I am hoping to wait another 10-15K before changing all four. But I am wondering if I am doing any damage to the transmission. Car runs well and very smooth.
BTW, shouldn't we all be getting five new tires every time we replace?
BTW, shouldn't we all be getting five new tires every time we replace?
Pole Position
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From: Missouri
Unless the tires all all different SIZES, no worries about any damage to your vehicle. As for getting 5 new tires......meh. I wouldn't. I've been driving for nearly forty years and I think I've had to use a spare twice. My spare only needs to get me to the nearest tire shop to fix the tire that went flat. Heck....most cars come with a temporary spare from the factory.
), so it is best to keep the spare tire only for emergency use.
Lead Lap
Joined: Oct 2012
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From: Co
Different tread design/depth at different wheels, changes rolling resistance, which could lead to damage to the drive train (so they say).
We had customers blow out their bevel gears (center diffs) in AWD Volvos by mismatching tires. 2k back then. Probably 10k to fix now.
We had customers blow out their bevel gears (center diffs) in AWD Volvos by mismatching tires. 2k back then. Probably 10k to fix now.
Pole Position
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From: Missouri
Different tread design/depth at different wheels, changes rolling resistance, which could lead to damage to the drive train (so they say).
We had customers blow out their bevel gears (center diffs) in AWD Volvos by mismatching tires. 2k back then. Probably 10k to fix now.
We had customers blow out their bevel gears (center diffs) in AWD Volvos by mismatching tires. 2k back then. Probably 10k to fix now.
What would be the symptoms of drive train or center diff damage due to mismatched tires?
Intermediate
Joined: Jul 2001
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From: SF Bay Area
Yeah, there's no reason to buy 5 tires. That full size spare is good for at least 10 years, as others have said it's not like you're going to drive on it for more than a day or two.
I'm currently on Bridgestone Turanzas that the previous owner put on the car, I can't wait to get out of them....I will go with the much loved Pirellis P7s or possibly Michelins.
Unless you're running different tire sizes (diameter is what really matters) there is almost no chance that you're going to have diff. problems.
I'm currently on Bridgestone Turanzas that the previous owner put on the car, I can't wait to get out of them....I will go with the much loved Pirellis P7s or possibly Michelins.
Unless you're running different tire sizes (diameter is what really matters) there is almost no chance that you're going to have diff. problems.
Pole Position
Joined: Apr 2015
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From: MN
On AWD vehicles, if you're going to replace 1 tire, replace all 4. No need to replace the 5th unless you really want to. In fact many tire places I've been to with my Audi simply refuse to install just 1 tire even if it's the same brand and model. Could just be a Minnesota thing though and other states don't care as much.
Pole Position
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From: AR
enoch861
My son in Charlottesville, VA had the some problem at Costco on his 2015 AWD Ford Flex. Costco would not install just one new tire after his wife drove over something and trashed a tire. They would install a pair. I think the damaged tire had 12-13K on it.
Dennis
My son in Charlottesville, VA had the some problem at Costco on his 2015 AWD Ford Flex. Costco would not install just one new tire after his wife drove over something and trashed a tire. They would install a pair. I think the damaged tire had 12-13K on it.
Dennis
Pole Position
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From: Missouri
On AWD vehicles, if you're going to replace 1 tire, replace all 4. No need to replace the 5th unless you really want to. In fact many tire places I've been to with my Audi simply refuse to install just 1 tire even if it's the same brand and model. Could just be a Minnesota thing though and other states don't care as much.
enoch861
My son in Charlottesville, VA had the some problem at Costco on his 2015 AWD Ford Flex. Costco would not install just one new tire after his wife drove over something and trashed a tire. They would install a pair. I think the damaged tire had 12-13K on it.
Dennis
My son in Charlottesville, VA had the some problem at Costco on his 2015 AWD Ford Flex. Costco would not install just one new tire after his wife drove over something and trashed a tire. They would install a pair. I think the damaged tire had 12-13K on it.
Dennis
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