Blasted all wheel drive

[zanejohnson]

I miss my awd even though I think that car spent more downtime Than uptime

 

[Bacstar]

The car has an auto-disconnect feature for the AWD system, so it might do it on it's own. I've been looking through the manuals, and all it mentions about driving on the spare is-do not exceed 60mph and get tire repaired ASAP.

 

[lokiju]

OP means AWD I'm sure not 4 wheel drive. Some people don't understand the difference.

Same thing happened on my Forester last year.

Leaving a gas station that had some construction next door and ran over some metal bracket thing I didn't see that went right into the bottom and sidewall of the tire making it completely unrepairable.

Tread on tires was only about 50% but with AWD you replace all 4 if that happens or risk screwing up your tranny.

 

[Evadman]

I once had 33x12.50R16's on the back of my truck and 235-70R16's on the front when the tread on the fronts delamianted and I was unable to find anything even close. When I went off road and put it into 4wheel, oh god, did my truck complain. I was waiting for it to kick the front driveshaft though the floor after a Ujoint said ''Screw this, I'm outa here!". I put it back into 2 wheel high, but I got stuck sadly 🙁

In 2 wheel high though, it drove pretty normal on the road unless I went over 65, but the rake was stupidly high. When I used the brakes, I thought I was going to fall though the windshield. At around 75, I could feel the ass end bouncing around on the freeway, even when I lowered the tire pressure to a stupidly low 25 psi so I could get home. IIRC, placard was either 80 or 120, I don't remember which, in the rear. I'll check when I get home.

 

[LiuKangBakinPie]

Just go in the game options menu in Need for Speed and turn the vehicle damage feature off

 

[Ferzerp]

if its tubeless just add a tube

not sure if trolling...

 

[Jumpem]

My car is an 05 Subaru legacy gt. I guess subies are especially sensitive to this...

Absolutely need to replace all four.

 

[Jumpem]

What I don't get is that even with all tires being the same, all 4 don't wear down the same do they?

Is the system really sensitive to what, 1/20 of an inch?

Subaru requires all tires to be within 2/32 of an inch.

 

[disappoint]

Subaru requires all tires to be within 2/32 of an inch.

You mean 1/16? rooflesquirts

 

[Ferzerp]

You mean 1/16? rooflesquirts

Always fun when someone tries to hypercorrect and fails. Tire tread is typically measured in 32nds of an inch, so when comparing the wear of two tires, you'd not reduce it because the accepted unit (if not going metric) is in 32nds of an inch.

"rooflesquirt" that.

 

[Bignate603]

Just so you are aware the tire rack will shave a brand new tire to match your current ones. If you've got a ton of tread left on the remaining 3 that are still good and tire rack carries that tire it would be much cheaper.

The bit about shaving tires is near the bottom.
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=18

 

[mvbighead]

Interesting point about TireRack. I'll keep that in mind for my 00 Jeep that is also full time AWD.

My mechanic did specifically tell me the same, replace all 4 when replacing. Everyone else here has explained why. So OP, either tire-rack or go buy four new. Sucks, but that is life.

 

[TheHashmaster]

wow 0 tolerance?? that blows. at least u'll have 3 spares now -_-

 

[Ferzerp]

The tirerack link suggests that Subaru tolerance is 2/32" tread wear difference, not 0.

 

[LTC8K6]

The tirerack link suggests that Subaru tolerance is 2/32" tread wear difference, not 0.

The owner's manual suggests otherwise... 😀

But I suppose there must be some tolerance.

 

[Ferzerp]

The owner's manual suggests otherwise... 😀

But I suppose there must be some tolerance.

Does it actually give a tolerance, or does it just avoid the issue and says "Change all 4"?

subaru.com (https://www.subaru.com/my-subaru/faq-technical.html) is saying 1/4" circumference, which actually works out to be less than 2/32nds of tread wear (double the tread wear = the diameter change, and 1/4" circumference means only .08" difference in diameter, or .04" treadwear (roughly 1.3 32nds).

4. Do I have to replace all four tires on my AWD Subaru?

All of the tires on your AWD Subaru must be within 1/4 of an inch of rolling circumference (part that touches the road). This is because of our All Wheel Drive System.
Proper rotation of the tires at the appropriate service intervals will increase the life expectancy of your tires. This will also ensure that all four tires stay relatively equal in their tire tread wear. When vehicles are serviced, tires should be routinely checked to ensure that the alignment and tires are in good working condition.

 

[T2urtle]

I've done all sorts of different tires on my awd infiniti. At first I would trigger the awd light. When blinking awd is disabled most of the time unless it really needs its.

Since then I've learn about outer diameters of tires and how 215/55/17 is the same diameter as 235/45/18 and 265/40/18. Those don't piss off my awd. I was mainly looking at Japanese drift car setups on the skylines. But my car is awd at launch and rwd at speeds, subarus are full time awd as I understand.

 

[LTC8K6]

Does it actually give a tolerance, or does it just avoid the issue and says "Change all 4"?

subaru.com (https://www.subaru.com/my-subaru/faq-technical.html) is saying 1/4" circumference, which actually works out to be less than 2/32nds of tread wear (double the tread wear = the diameter change, and 1/4" circumference means only .08" difference in diameter, or .04" treadwear (roughly 1.3 32nds).

It's posted back a bit.

It reads as if there's no tolerance.