Tire Load Rating...how important is it really??

[jprice]

Right and my question is the same. What does knowing what it is prove?

Not sure if you're purposefully being obtuse??

How can someone make sure they're buying a tire load index high enough if they don't know what the requirement is? If Audi has given us a specific recommendation, what is it? If you were buying a tire for a B8, what is the load index that you're going to make sure you're at or above?

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4938 for a B8.5 S5 from the door.

At least this guy gets that it's based on the GVWR :D

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96

Awesome.. thanks! :) Where did you get that number from?

[JohnEnglish]

Not sure if you're purposefully being obtuse??

How can someone make sure they're buying a tire load index high enough if they don't know what the requirement is? If Audi has given us a specific recommendation, what is it? If you were buying a tire for a B8, what is the load index that you're going to make sure you're at or above?

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At least this guy gets that it's based on the GVWR :D

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Awesome.. thanks! :) Where did you get that number from?

The point is if you use a place like tirerack or whatever, you don't need to worry about that. Once you specify your vehicle tires meet the requirement are shown to you. Sure us enthusiasts love to know all the minutiae of our vehicles but for the average person it's not necessary.

[jprice]

The point is if you use a place like tirerack or whatever, you don't need to worry about that. Once you specify your vehicle tires meet the requirement are shown to you. Sure us enthusiasts love to know all the minutiae of our vehicles but for the average person it's not necessary.

So to summarize, you have no idea what the minimum load index is, but just trust the tire shop to know for you. That's fine.. just trying to get to the bottom of this "Audi Recommended" load index that people keep talking about. If there is one, it has a specific value.

[db12]

Well LOL, I answered my own post. After seeing all the debate from my original question I downloaded the Audi manual. Turns out there are "2 Load Ratings" for the S4

If you running 18's = 93 Load index (speed ratings vary based on type of tire h or y etc)

If you running 19's = XL load index (speed rating y)

I run 18's at the track so guess Im good to go.

[jprice]

Well LOL, I answered my own post. After seeing all the debate from my original question I downloaded the Audi manual. Turns out there are "2 Load Ratings" for the S4

If you running 18's = 93 Load index (speed ratings vary based on type of tire h or y etc)

If you running 19's = XL load index (speed rating y)

I run 18's at the track so guess Im good to go.

Good job! :) Glad you went to the source instead glazing over the topic like most do. Now you know an actual number. :D

[JohnEnglish]

It's almost like the Audi engineers who designed the car know what's best for it.

[jprice]

It's almost like the Audi engineers who designed the car know what's best for it.

You mean it's like they know the gross vehicle weight at each corner and know how to reference a load index chart? ;)