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Old 11-27-2014, 07:02 AM   #11
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Poor ole' Dodge. Better brush him down at night and give him some sweet feed.


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Old 11-27-2014, 10:06 AM   #12
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That poor 'ol Dodge pulls it at 80 just fine. I am sure just like yours does
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Old 11-27-2014, 10:24 AM   #13
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Going from a ST235 80r16 to a LT235 85r16 shouldn't increase your tire diameter, only width...? A 235 is a 235. Am I missing something?
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Old 11-27-2014, 10:32 AM   #14
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Quote:
Originally Posted by Taranwanderer View Post
Going from a ST235 80r16 to a LT235 85r16 shouldn't increase your tire diameter, only width...? A 235 is a 235. Am I missing something?
I went through this yesterday at a tire dealership while getting new tires on my wife's car. If you go from a 235 80R 16 to a 235 85R 16, you are increasing the side wall height by 5mm. My issue is I have about an inch between my tires now and losing any more space there concerns me when making tight turns. I'm not sure what the minimal acceptable clearance is between the tires. I'm not worried about increasing the height 5mm and want a tire I can do 70mph on. Still looking.
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Old 11-27-2014, 10:44 AM   #15
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Quote:
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Going from a ST235 80r16 to a LT235 85r16 shouldn't increase your tire diameter, only width...? A 235 is a 235. Am I missing something?
It'll raise it 1/4 to a 1/2 inch

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Old 11-27-2014, 02:33 PM   #16
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Going from a ST235 80r16 to a LT235 85r16 shouldn't increase your tire diameter, only width...? A 235 is a 235. Am I missing something?
235 is the width, the 80 or 85 is the aspect ratio. Going to the 85 light truck tire added about an inch. After pulling it this past summer I had zero problems. As others have noted, you do have to watch your load rating with LT tires. They are not rated as heavy as ST tires. I am still ok on my setup on load carrying.

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Old 11-27-2014, 05:11 PM   #17
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I went through this yesterday at a tire dealership while getting new tires on my wife's car. If you go from a 235 80R 16 to a 235 85R 16, you are increasing the side wall height by 5mm. My issue is I have about an inch between my tires now and losing any more space there concerns me when making tight turns. I'm not sure what the minimal acceptable clearance is between the tires. I'm not worried about increasing the height 5mm and want a tire I can do 70mph on. Still looking.

I'm have the same issue - the space between my tires is very close. Any increase to both tires will make it exceptionally close.
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Old 11-27-2014, 05:55 PM   #18
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LT tires must have a twenty percent safety margin and are rated at max mph. I put bf Goodrich commercial ta's on my Sanibel. Gained 1-1.5 mpg, have had them on a year and 20,000 miles. Easier ride, This is the second rv with them. Not a flat or blow out, unlike my ST tires made in China.
This is and most likely will always be a hot topic on this forum. I would much rather have a tire made in usa, safety rating of 20%, rated at 99 miles per hour and to carry passengers, Than a tire rated at 60-65 mph with no safety margin and not certified to carry passengers.
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Old 11-27-2014, 06:08 PM   #19
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Whats Up Jeff
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Old 11-27-2014, 06:22 PM   #20
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I guess my other issue is that the LT tires usually have a lower load carrying capacity than ST tires in equivalent sizes and load range.
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