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load index for tires

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Old 09-28-10, 11:35 AM   #1
ghd8989
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Default load index for tires

Does everyone ignore this number when they go to a smaller profile bigger tire?

When I called to order some 285/25 20s for my rear tires, they said they didn't have a tire that would be adequate according the load index numbers for the given tire.
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Old 09-28-10, 11:52 AM   #2
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As long as it's close it's fine. The load indexes specified are very pessimistic and you would probably have to fill your car with 5 adults and a trunk full of lead before it became any kind of problem.
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Old 09-28-10, 11:55 AM   #3
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That was my contention with the load index. I have seen some boats with the same tires as the ones I was looking at (Chrysler 300 C).
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Old 09-28-10, 02:26 PM   #4
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i have seen and run tires with not enough load index as well, never had a problem. i can't say it will never have problems, but personally i haven't seen friends with these tires having blow out or related problems
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Old 09-28-10, 03:49 PM   #5
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I am on 245/30/20's up front and they are not indexed high enough for the load as well. So far so good. Although I did have a set of Falken FK452s that the tread separated on. That was a bit scary.
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Old 09-28-10, 05:44 PM   #6
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What's the index the car requires (I forget) and what are you planning on using? My tires are 93.
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Old 09-28-10, 06:21 PM   #7
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93 as well
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Old 09-30-10, 10:24 AM   #8
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In theory a lower load index tyre should have a slightly higher pressure to compensate.
(The effective load bearing capability of a tyres increases with pressure. Up to a point). Tyres have an easier life at higher pressures and will last longer; with the downside of comfort and perhaps grip.
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Old 09-30-10, 10:24 AM
 
 
 
 
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300, 350, 400, chart, crysler, gs, index, lexus, load, ls, rating, rx, smaller, tire, tires

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