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Old 05-19-2012, 12:44 PM   #1
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Tire meanings??

like with speed rating T S R, whats the difference?? and its prob better to get a P tire for my tacoma then a LT?? And even load index?? Whats up with that bi"?? haha
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Old 05-19-2012, 12:48 PM   #2
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When I was looking for tires on BFG, they had a list of definitions for all of their abbreviations. Try looking for something like that around the website of the brand that you're looking at.
Hope that helps
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Old 05-19-2012, 01:06 PM   #3
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At the beginning of the size Like LT265-70-16 or P245-75-16, the LT stands for Light Truck as in not a Semi, and P stands for Passenger. LT's are gonna be more for load handling where as P's are more for road performance and comfort. If you don't tow or go off road, get a P rated tire, if you find yourself in situations that call for an LT tire, get it. Doubt you'll have to worry much about speed rating unless you have a race truck. And load rating, is pretty strait forward, you really don't need a heavy load tire, as long as each on is rated for at least 1k lbs or about 500kg you should be fine because your load, if properly loaded, should be distributed to all four wheels. Other than that, go on a tire mnfctr website to get more detailed info.
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Old 05-19-2012, 01:15 PM   #4
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Speed rating is a non-issue on the Tacoma.
While I'm sure if you really really tried and went cheap, you could find a "P" rated tire that tops out at 93mph, but for the most part, the cheapest tire you're going to find is going to be an "S" rating or better, which is good to 112mph (dunno about the Tacoma, but the 1st-Gen Tundra speed limiter was 105).

Do be careful though, there are some "L" rated light truck and offroad tires that are limited to 75mph.

On load ratings, it's a little more involved, but in general, for a Tacoma, you aren't going to encounter any issues with any tire sized for the truck:
http://www.tirerack.com/tires/tirete....jsp?techid=55
http://www.tirerack.com/tires/tirete....jsp?techid=35
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Old 05-19-2012, 01:17 PM   #5
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Quote:
Originally Posted by Texoma View Post
At the beginning of the size Like LT265-70-16 or P245-75-16, the LT stands for Light Truck as in not a Semi, and P stands for Passenger. LT's are gonna be more for load handling where as P's are more for road performance and comfort. If you don't tow or go off road, get a P rated tire, if you find yourself in situations that call for an LT tire, get it. Doubt you'll have to worry much about speed rating unless you have a race truck. And load rating, is pretty strait forward, you really don't need a heavy load tire, as long as each on is rated for at least 1k lbs or about 500kg you should be fine because your load, if properly loaded, should be distributed to all four wheels. Other than that, go on a tire mnfctr website to get more detailed info.
This.

LT are nice, but heavy, and run higher pressures.
Higher pressures will increase tire life and reduce the risk of hydroplaning, but they also ride harder, and the increased weight of the LT puts a hit on fuel economy.
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Old 05-19-2012, 01:32 PM   #6
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The load (for is example 265/65/17 110S) 110 is the load. It is a short key and represents how much weight that single tire can carry. It is never recommended you go below your load index. And it seems that LT vs P is covered
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Old 05-19-2012, 01:35 PM   #7
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http://en.wikipedia.org/wiki/Tire_code#Light_trucks
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Old 05-20-2012, 08:58 AM   #8
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Wow thanks a lot buddy's!! I do a bit of towing just towing my 17ft aluminum boat in the summer the. My quad in the summer also... So LT gives you more life you'll get out of a tire?? I guess if they are bit heavier I see... But 110 like 110 what's it mean is it like 100lbs or 1000lbs heaviest thing I tow is my boat ..
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Old 05-20-2012, 10:20 AM   #9
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also higher the ply the more it hurts your fuel milege to dont it?
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Old 05-20-2012, 11:03 AM   #10
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Quote:
Originally Posted by perchie15 View Post
Wow thanks a lot buddy's!! I do a bit of towing just towing my 17ft aluminum boat in the summer the. My quad in the summer also... So LT gives you more life you'll get out of a tire?? I guess if they are bit heavier I see... But 110 like 110 what's it mean is it like 100lbs or 1000lbs heaviest thing I tow is my boat ..
110 is the load index... 110 is the highest for passenger car tires, over 2300 pounds per tire. That's not TOWING weight... that's VERTICAL weight.... 4 would be good for a GVWR of 9200 pounds.
Your Tacoma's suspension will bottom out and your wheel bearings will scream at anything over 5000lbs gross. The Tacoma doesn't "need" a tire rated higher than 89 (and FWIW, I run load index 88 on my motorcycle)
Quote:
Originally Posted by perchie15 View Post
also higher the ply the more it hurts your fuel milege to dont it?
Simply because of the added weight.

The higher ply are thicker and heavier. They are more resistant to heat damage on the highway under heavy loads, provided they are properly inflated (follow the sidewall for LT tires, NOT the door sticker which is for P-rated tires).
Problem is if they are underinflated, like any tire, they will get hot, and being thicker and heavier, they will retain that heat much longer.

A 17ft aluminum boat that I'm assuming weighs less than 3000lbs with the trailer? Stick with regular P tires. You don't need LT for that. I really can't think of any application where the Tacoma needs LT tires.
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Old 05-20-2012, 11:14 AM   #11
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Quote:
Originally Posted by Rich91710 View Post
110 is the load index... 110 is the highest for passenger car tires, over 2300 pounds per tire. That's not TOWING weight... that's VERTICAL weight.... 4 would be good for a GVWR of 9200 pounds.
Your Tacoma's suspension will bottom out and your wheel bearings will scream at anything over 5000lbs gross. The Tacoma doesn't "need" a tire rated higher than 89 (and FWIW, I run load index 88 on my motorcycle)

Simply because of the added weight.

The higher ply are thicker and heavier. They are more resistant to heat damage on the highway under heavy loads, provided they are properly inflated (follow the sidewall for LT tires, NOT the door sticker which is for P-rated tires).
Problem is if they are underinflated, like any tire, they will get hot, and being thicker and heavier, they will retain that heat much longer.

A 17ft aluminum boat that I'm assuming weighs less than 3000lbs with the trailer? Stick with regular P tires. You don't need LT for that. I really can't think of any application where the Tacoma needs LT tires.
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And the weight of the tire like lots seem to be around 45, that just hurts a guys fuel mileage to wont it? And i see lot of 10plys yikes I do alot of highway driving continuously atleast for 10hrs at once, so would thicker ply be better if i do that kind of driving?..
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Old 05-20-2012, 11:22 AM   #12
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I would (and do) stick with P-rated tires and just bring them up to 35psi.
The higher pressure will help keep the temperature down, and will reduce rolling resistance for the best fuel economy.

No way in hell a Tacoma would EVER need a 10-ply LT tire. That's a load range E and might be needed for a 3/4 ton or 1 ton pickup hauling and towing heavy loads.

Remember... the Tacoma is a basic mid-sized truck that is BARELY rated for 1/2 ton.
You'd not be able to utilize the load capacity of even a 4-ply LT tire.
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Old 05-20-2012, 11:26 AM   #13
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Quote:
Originally Posted by Rich91710 View Post
I would (and do) stick with P-rated tires and just bring them up to 35psi.
The higher pressure will help keep the temperature down, and will reduce rolling resistance for the best fuel economy.

No way in hell a Tacoma would EVER need a 10-ply LT tire. That's a load range E and might be needed for a 3/4 ton or 1 ton pickup hauling and towing heavy loads.

Remember... the Tacoma is a basic mid-sized truck that is BARELY rated for 1/2 ton.
You'd not be able to utilize the load capacity of even a 4-ply LT tire.
Yeah thats what i figured to.. Im looking at tires to buy for my custom wheels, and lot of them are 10ply like wow thats unnecessary i think, specially if im doing lot of highway driving... I think dynapros are pretty much my choice then out of the other ones i was looking at were mainly at 10ply
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Old 05-20-2012, 11:40 AM   #14
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Most 10-ply (load range E) are also available in 8 ply (D).
Still way overkill for the Tacoma, but a bit lighter and probably $20 cheaper.

When I put BFGs on my Duramax, I had the choice between LR D or E in the 285/75-16. I went with E... they still looked new at 35k, but they did hurt my fuel economy.
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Old 05-20-2012, 11:55 AM   #15
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Yeah I think 6 is perfect but seems like only a choice between 10 and 4.. Now that im starting to understand tires more, i ordered tires from canadian tire that were suppose to be Ps but end up getting stupid LT and come to think of it my fuel economy has went down... not sure what the rating for them are. but just winter tires anyways...
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