Under 2k miles, nail in tire....almost had a heart attack

1879 Views 18 Replies 11 Participants Last post by mark1, Dec 10, 2015

Philth

Discussion Starter · Dec 7, 2015

When the tire shop said the nail was almost too close to the edge to repair. Said I would have had to buy all 4 tires since it's AWD and they don't shave tread down.

So, the question I have is: If one tire goes, all four need to be replaced?

1 - 19 of 19 Posts

ToolmanJohn

· #2 · Dec 7, 2015

Depends how worn they are. Big diameter changes from wear or different tire brands can freak out the traction control system, or cause other tire wear.

If the tires still have half life, I would just put a new tire on (same brand/model).

Philth

Discussion Starter · #3 · Dec 7, 2015

This particular shop was telling me a story where they changed 2 tires on an Audi Quattro. Three months later, the lady's transmission blew up and she sued and won. Now they won't even mess with AWD cars unless they replace all 4 tires.

N_Jay

· #4 · Dec 7, 2015

Find another shop!

2K miles is not enough to matter.

fincher

· #5 · Dec 7, 2015

Agree. Find another shop. I seem to get a nail in a tire once or twice yearly. I also get tire insurance...about $25 per tire. Worth it to me since in it includes the cost of plugging a tire (if nail is in center area) or replacing the tire (if nail is outside of center area). If the tire has a lot of miles, the replacement is pro-rated.

FSJ Guy

· #6 · Dec 7, 2015

N_Jay said:
Find another shop!

2K miles is not enough to matter.

X2. Shaving tires is not voodoo science. It's a well known practice in the industry.

A good tire shop should be able to do it, but again, probably not required for only 2,000 miles of wear.

noobytoogy

· #7 · Dec 8, 2015

How many more times do I have to type:

No more than 2mm tread depth difference on the same axle.

No more than 3mm tread depth difference between front and rear axles.

And ALL four tyres/tires must be the same size, same make, same model, same tread pattern.

Reactions: 1

Odessa

· #8 · Dec 8, 2015

shaving unfortunately is ghost whispers in Sydney. Only one shop and they were racers and could not accommodate large wheel sizes

bloody frustrating that old tech is out the door !!!!

FSJ Guy said:
X2. Shaving tires is not voodoo science. It's a well known practice in the industry.

A good tire shop should be able to do it, but again, probably not required for only 2,000 miles of wear.

Odessa

· #9 · Dec 8, 2015

Noob

youve done enough. Let me shout you a pot of tea !!!!

Would you like a bicky and a throw over your legs :evil_laugh::evil_laugh::evil_laugh:

Sorry couldnt help it. Maybe we will meet up for the grumpy old man Christmas special

noobytoogy said:
How many more times do I have to type:

No more than 2mm tread depth difference on the same axle.

No more than 3mm tread depth difference between front and rear axles.

And ALL four tyres/tires must be the same size, same make, same model, same tread pattern.

Philth

Discussion Starter · #10 · Dec 8, 2015

noobytoogy said:
How many more times do I have to type:

No more than 2mm tread depth difference on the same axle.

No more than 3mm tread depth difference between front and rear axles.

And ALL four tyres/tires must be the same size, same make, same model, same tread pattern.

Haven't looked in the manual yet regarding this; I assume it states this?

N_Jay

· #11 · Dec 8, 2015

Philth said:
Haven't looked in the manual yet regarding this; I assume it states this?

I doubt it!

LOL

Philth

Discussion Starter · #12 · Dec 9, 2015

Well on that note, I'm trying to recall the addendum that I received to my owner's manual regarding tire rotations. I want to say that it said not to rotate them at all. Anybody else have the addendum?

Green Egg

· #13 · Dec 9, 2015

I'm usually pretty skeptical about things like this. However, in THIS case I wold opt for keeping the tires within the spec nooby quotes. Keep in mind Nooby has been around here for a long time and has helped out a lot of people, myself included. The cost of being wrong is a whole lot higher than the benefit to being right. If a mis-sized tire places undue wear on some part of the driveline (and it make some sense that it could), the cost of the cheapest part is really high. However in this case getting a tire shaved a little bit sounds like it would be pretty cheap.

I do wonder about how much different the new tire is at that low of a mileage. May be less than the tolerance. I also wonder about how much an over or under inflated tire could affect the effective circumference of the tire as it rolls along. So, its not like I don't have questions about the idea of keeping the tires within a certain spec, its just that I don't like to make hefty bets when I don't have solid facts to back me up.

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N_Jay

· #14 · Dec 9, 2015

Weird thing about tires. The rolling diameter stays fairly constant over the acceptable pressure range.

Under inflated the tread acts somewhat like a tractor tread and even though the axle center height is lower then the nominal radius, you still get the same effective revs per mile.
The tread only expands upon significant over-inflation.

The typical for 4WD/AWD systems is 3% effective rolling diameter and that is often as much as 1/2 the tread on a tire.
No harm in being conservative but almost no way 2K miles would exceed a fraction of 1%

ConservativeConsumer

· #15 · Dec 9, 2015 (Edited)

Read this well-compiled article about 4-wheel drive tire replacements:
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=18
I know for certain that the Tirerack does offer tire-shaving services.
And, yes, the Manual (in my case of 2012 TDI) does have info about tire replacement and variances in tire tread depths.

ToolmanJohn

· #16 · Dec 9, 2015

Philth said:
Well on that note, I'm trying to recall the addendum that I received to my owner's manual regarding tire rotations. I want to say that it said not to rotate them at all. Anybody else have the addendum?

No addendum..The tire rotation schedule should be at 10K miles, every oil change. That's the way it's laid out in the maintenance schedule for year 2013. I have been doing this and I have even tire wear.

Funny this thread is about getting nailed. Yesterday, I noticed a small screw in the outside tread of my rear tire, near the sidewall. It must be short because I haven't seen a drop in tire pressure (checked 4 times since yesterday). I'm going to unscrew it at home. If it leaks, I'll go straight to the Winter set of wheels/tires, and getting new all-seasons in the Spring was my plan anyway (37K+ miles on the OE Pirelli Scorpion Verde tires, they are nearly done anyway).

I didn't want to install the Winter rubber until there's a need. The temps have been warm for this time of year.

N_Jay

· #17 · Dec 9, 2015

ConservativeConsumer said:
. . . .
And, yes, the Manual (in my case of 2012 TDI) does have info about tire replacement and variances in tire tread depths.

What does it say?

Ewie

· #18 · Dec 9, 2015

If we assume that the life of the tyre/tire is around 35,000Km and the new useable tread depth 8mm then a 2mm difference (for same axle) in tread depth would equate to 8,750Km or 13,000Km front to back (provided both tyres on each axle do not exceed the 2mm). I would assume that the 3mm difference would apply to smallest and largest between back & front axles.
So the tyre size issue has a fair amount of latitude within which they can be combined. Not as scary as it sounds at first.

mark1

· #19 · Dec 10, 2015

LOL- change your dealer...

You should have "comparable" diameters on each axle- but what we are talking about here will be less than having a little bit different tire pressure or an unbalanced load (weighs your wife the same as you?

)

or tell him you need it as spare tire for the trunk...

br
Mark

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