Need Help...A Little Confused
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From: The Land Of Time
Need Help...A Little Confused
I am in the market for some new tires, I was going to either stick with the BFG All Terrain T/A in a 305-65-18 Load E, or try the Cooper Discover STT in a 35x12.5R18 Load E.
My confusion lies with will the coopers fit. My truck has a leveling kit on it, and I will be mounting the tires on a set of 11 take off Lariat wheels.
Anyone that has the STT's how do you like them and how are they wearing. My BFG's are wearing like iron so its a little hard for me to convince myself to switch.
Also what is the tire size, in inches, on the 305's.
Thanks,
Sarge
My confusion lies with will the coopers fit. My truck has a leveling kit on it, and I will be mounting the tires on a set of 11 take off Lariat wheels.
Anyone that has the STT's how do you like them and how are they wearing. My BFG's are wearing like iron so its a little hard for me to convince myself to switch.
Also what is the tire size, in inches, on the 305's.
Thanks,
Sarge
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I have been running General Grabber AT 2s on my Jeep for 3 years now and love their performance on and off road. I am hard on my Jeep and have no problems w/ the tires. I need to get tires for my F 250 and am going to be getting them for the truck as well. If they come 18s I would jump on them. Just as good or better than the BFGs at a considerable savings.
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Joined: Oct 2011
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From: Mcdonough, GA
This help
Found this the other day. Made it clear for me.
What do metric tire sizes mean:
We'll first label the parts as follows:
285/70/R17
_^__^__^
_A__B___C
A- This is the width of the tire in millimeters. The conversion is 1"= 25.4mm so for our example: 285/25.4= 11.22" width.
B- This part is the "aspect ratio" of the tire and is a relation of the tire's width to the sidewall height of the tire. In our example it's '70'. This means the sidewall height is 70% (.70 in calculation) of the width of the tire. That means the sidewall height is:
11.22 x .70= 7.85"
BUT there is a 'sidewall' both above and below your wheel when measuring height, so you must multiply this by 2 when calculating the tire's overall height.
C- This third piece is simply your rim size. So, for a final calculation of a tire's size, you add this to the total from part B.
In conclusion, a 285/70/R17 equates to 11.22" wide and is (7.85x2)+17"= 32.71" tall, or basically equivalent to a 33x11.50R17 if we called it a standard size.
How about one more example, 265/75/R16:
Width: 265/25.4= 10.43"
Sidewall: 10.43 x .75= 7.82"
overall height: (7.82" x 2)+ 16"= 31.64" tall. Basically, a 32x10.50R16
This method of finding a tire size will work for every metric tire size out there!
NOTE:
It should also be mentioned that different manufacturers' tire sizes will slightly vary from these calculations. Its usually a very minor amount but it's still there none the less. For this reason I recommend everyone looking at tires to go to the respective Manufacturers web site and look up the exact specifications they list for the tire before buying a set, or to compare tires between different manufacturers.
In this case the 305/65 18 would be approx 33.5 x 12
What do metric tire sizes mean:
We'll first label the parts as follows:
285/70/R17
_^__^__^
_A__B___C
A- This is the width of the tire in millimeters. The conversion is 1"= 25.4mm so for our example: 285/25.4= 11.22" width.
B- This part is the "aspect ratio" of the tire and is a relation of the tire's width to the sidewall height of the tire. In our example it's '70'. This means the sidewall height is 70% (.70 in calculation) of the width of the tire. That means the sidewall height is:
11.22 x .70= 7.85"
BUT there is a 'sidewall' both above and below your wheel when measuring height, so you must multiply this by 2 when calculating the tire's overall height.
C- This third piece is simply your rim size. So, for a final calculation of a tire's size, you add this to the total from part B.
In conclusion, a 285/70/R17 equates to 11.22" wide and is (7.85x2)+17"= 32.71" tall, or basically equivalent to a 33x11.50R17 if we called it a standard size.
How about one more example, 265/75/R16:
Width: 265/25.4= 10.43"
Sidewall: 10.43 x .75= 7.82"
overall height: (7.82" x 2)+ 16"= 31.64" tall. Basically, a 32x10.50R16
This method of finding a tire size will work for every metric tire size out there!
NOTE:
It should also be mentioned that different manufacturers' tire sizes will slightly vary from these calculations. Its usually a very minor amount but it's still there none the less. For this reason I recommend everyone looking at tires to go to the respective Manufacturers web site and look up the exact specifications they list for the tire before buying a set, or to compare tires between different manufacturers.
In this case the 305/65 18 would be approx 33.5 x 12
Logistics Pro
Joined: Oct 2011
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From: Mcdonough, GA
Oh yeah,
I just put Cooper Discover AT3's on my truck. Price was reasonable and their getting good reviews. Won't know for a while how they'll wear but they are quieter than the Nitto's I had on it.
I just put Cooper Discover AT3's on my truck. Price was reasonable and their getting good reviews. Won't know for a while how they'll wear but they are quieter than the Nitto's I had on it.
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Logistics Pro
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From: The Land Of Time
Im going to go with the Cooper AT3's as well and Im keeping the 285/65/18
I can stay with a 10 ply tire and load E for the 5er, hopefully they wear as well as the BFG's but at almost 1/2 the price its worht a try I guess.
I will post updated pics with the 2011 wheels and new sneakers installed.
does the truck feel stable with the AT3's. I had a set of GY Silent Armours on a set of DC-2s and the truck felt squishy with those, to the point I sold the wheels and tires. How do the tires grip in wet grass/slight mud and snow? Ive had the BFG's so long I kinda have some buyers remourse I guess.
Thanks
Sarge
I can stay with a 10 ply tire and load E for the 5er, hopefully they wear as well as the BFG's but at almost 1/2 the price its worht a try I guess.
I will post updated pics with the 2011 wheels and new sneakers installed.
does the truck feel stable with the AT3's. I had a set of GY Silent Armours on a set of DC-2s and the truck felt squishy with those, to the point I sold the wheels and tires. How do the tires grip in wet grass/slight mud and snow? Ive had the BFG's so long I kinda have some buyers remourse I guess.
Thanks
Sarge
Last edited by Sarge261; Mar 8, 2012 at 06:38 PM. Reason: Had a Couple More Questions
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From: The Land Of Time
If you had to do it all over again would you buy these same tires?
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Logistics Pro
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From: The Land Of Time
Thanks Red Ford,
I know that its a 33" tire. I decided to stick with the 285 (32.56") is what the AT3 measures out to be. I talked to a distributor today, like I said Im just a little nervous about how the truck will feel.
But with a new heavy 5er in the future, I cant gamble my families life or the lives of the folks around me with the amount of cracks I have on the side walls of these BFG's
They wore like iron but I always had a tire that would take a huge amount of weight and never really balanced all that well.
Thanks,
Sarge
I know that its a 33" tire. I decided to stick with the 285 (32.56") is what the AT3 measures out to be. I talked to a distributor today, like I said Im just a little nervous about how the truck will feel.
But with a new heavy 5er in the future, I cant gamble my families life or the lives of the folks around me with the amount of cracks I have on the side walls of these BFG's
They wore like iron but I always had a tire that would take a huge amount of weight and never really balanced all that well.
Thanks,
Sarge
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