IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

18" tire load index

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Old 02-04-08, 01:27 PM
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benz23
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Question '06 IS350 tire question

Hey all,

I'm debating between getting the Goodyear Eagle F1 A/S or Michelin Pilot Sport A/S. While utilizing the search function to get people's opinions of the two tires, I came across a post that talked about a tire's load index (can't remember which exact thread).

The person was favoring the Michelin's with a service description of 88Y(front) and 95Y(rear) and said to stay away from the Goodyear's load index of 92Y(front) and 99Y(rear) since the load index differs from OEM Dunlops of 88Y(front) and 95Y(rear).

Also, I notice the Goodyear's have a load rating of 'XL'. Will this really make a difference considering I have the sport-tuned suspension?

Thanks for the help in advance.

Last edited by benz23; 02-04-08 at 03:48 PM.
Old 02-04-08, 03:50 PM
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kickin8
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http://www.tirerack.com/tires/types/tiretype.jsp
Old 02-04-08, 03:54 PM
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kickin8
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load index:

http://www.tirerack.com/tires/tirete....jsp?techid=35
Old 02-04-08, 04:40 PM
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pkvir
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Why would a higher load index be bad? Just wondering.
Old 02-04-08, 05:42 PM
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mikes rx
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Originally Posted by pkvir
Why would a higher load index be bad? Just wondering.
Possible stiffer sidewall, which = stiffer ride
Old 02-04-08, 05:43 PM
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benz23
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I was assuming an increased load index wouldn't be a bad thing after researching the tire on tirerack as well as other sites, just figured I would throw the question out there...
Old 02-04-08, 07:21 PM
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FiveOhNine
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Originally Posted by mikes rx
Possible stiffer sidewall, which = stiffer ride
Stiffer sidewall also= better turn-in, steering response, etc.

As with everything in life, it is a trade-off.
Old 02-05-08, 10:11 AM
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slee18
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Originally Posted by FiveOhNine
Stiffer sidewall also= better turn-in, steering response, etc.

As with everything in life, it is a trade-off.
I agree with this. Except goodyears lately have been known for bad tire wear. It might carry more weight but they have been using a softer compound to give it a better ride and less road noise.

Cant go wrong with the michelin's if you can afford them.
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