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2020 Ram 2500 biggest tires on stock rims

kristof

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I don't know nothing about tires or rims. What is the biggest tire size I can out on my stock rims? Is there a rule or calculator for this?
 

Gswain

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I'm running 35x12.5 on bighorn 18s, only minor rubbing on radius arms
 

Ziggy

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I don't know nothing about tires or rims. What is the biggest tire size I can out on my stock rims? Is there a rule or calculator for this?
I went from the stock 285/60/20 to a slightly taller tire at 285/65/20. I have no rubbing at all during a full turn. My profile pic shows the new tires on my truck.
 

jazpdx

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If we’re talking stock wheels, 18X8…then go with 285/75 R18 they will fill the wheel well. They are right at 34.5 to 35 depending on brand and they are made for 8 inch wide wheels about 11 inches wide. 35x12.5 are for 9 inch wheels and they will rub. Shouldn’t have any problems take it to the bank.
 

bmacbowler

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If we’re talking stock wheels, 18X8…then go with 285/75 R18 they will fill the wheel well. They are right at 34.5 to 35 depending on brand and they are made for 8 inch wide wheels about 11 inches wide. 35x12.5 are for 9 inch wheels and they will rub. Shouldn’t have any problems take it to the bank.
What about those of us that have the stock 20 inch wheel looking to go as large as we can?

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neophyteguy

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What about those of us that have the stock 20 inch wheel looking to go as large as we can?

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I’m wondering the same thing. Reading through all these forums and I’ve got myself all confused. Was planning on going the continental HT, but now looking for an AT tire that’s good for wet roads (Florida here).
 

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