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Old 07-19-2013, 06:16 PM
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Bigger tires on F450

Just picked up an 08 F450 and will be looking for slightly larger tires. Have the stock 225s on 19.5s. 4in lift so I have some room. Looking for something slightly larger with high weight capacity to put on the stock wheels. Any thoughts or what has worked for you dully folks.
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Old 07-19-2013, 06:39 PM
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Not many options for the stock 19.5's that I know of. I don't know what the width of those rims are but you might be able to step up to 245's. You might gain an inch or two tops. Not that you'll need a lift for those.

Or you can drop a few grand and get some 22.5's.......
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Old 07-19-2013, 07:11 PM
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Ya. The lift came on the truck. Not my idea of a lift(4"spacers in the front/2"blocks in the rear), but I'm stuck with it til I get to the home stead.
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Old 07-19-2013, 09:03 PM
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Stock rims are 6" wide I have 245's on mine and it looks to have room to go to 265's but I would test fit them first and see how much room there is in the back. Not to sure where you are located but there are only a couple of traction/drive tires that I would run and thats the Toyo 608z's and the Hankook DH01's.
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Old 07-20-2013, 04:52 AM
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Ever heard anything good about Sumitomo ST918's? American Force sells them on their site.
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Old 07-20-2013, 05:57 AM
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Rob
What tire pressure do you run unloaded vs loaded? I assume, for heavy loads you run max pressure. Do you have TPMS on your truck? My F250 does, but I'm not sure if the 450 does.

Thanks for the new tire input. Looks like I'll be getting the Toyo's when it comes time.
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Old 07-20-2013, 06:45 AM
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I know there are guys that put the 245 and 265 width tires on the stock 6" rims.
But if you check the recommended minimum rim widths for those tires you will find a 225 has a 6" minimum, for most 245 tires it's 6.75" and for a 265 it's 7.5"
Maybe if you don't ever haul max GVWR it won't be a problem?
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Old 07-20-2013, 07:14 AM
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No TPMS's as they dont make them that will handle the 120psi that the tires can. As for my tire pressures I run them at around 90 all the way around all the time.


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Old 07-20-2013, 07:29 AM
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The 245's will run fine on stock rims. 265's are starting to get questionable as the spacing is becoming an issue in the rear especially if your going to be packing a lot of weight and have the possibility of having to put chains on. The factory tires on both of my trucks have been super well balanced. Smooth all the way past 100. The dh01's got shaky after about 75 but I think that was because they didn't do a good job balancing them. Going to have a different store put them on the new truck when its time to put them on. Just have to remember that these are semi truck tires and are only speed rated to 75. So don't expect them to ride smooth like a normal pickup tire.


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Old 07-20-2013, 07:46 AM
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Good to know. Will probably stay with stock size or go to 245's. Done buying new wheels for awhile
Just put American Force SS's/Toyo MT's on the 250 only to turn around and put the truck for sale 3 months later. There went 5 grand in wheels n tires.
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