SR5 biggest tires w/no mods?

[SweetDave]

Greetings all! I had 17" wheels on my '22 and ran 275/70R17s with zero issue. The '24s *look* to have much bigger/deeper wells, and while I know I can definitely run the 275/70R17 size on my SR5, I'd like to step up to 285/75R17s if this can be done; I have looked all over the forums for an answer to this but am unable to find any "definites" on biggest size for the SR5. Can anyone speak to this? Much thanks!

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[SweetDave]

Greetings all! I had 17" wheels on my '22 and ran 275/70R17s with zero issue. The '24s *look* to have much bigger/deeper wells, and while I know I can definitely run the 275/70R17 size on my SR5, I'd like to step up to 285/75R17s if this can be done; I have looked all over the forums for an answer to this but am unable to find any "definites" on biggest size for the SR5. Can anyone speak to this? Much thanks!

OK, I did find some videos on the YouTubes that confirmed my decision was correct: I am having 285/70R17s installed today, which these have been identified as “the ideal” tire for this setup with no mods.

 

[TacoJon]

Can you post pictures once installed? I’m debating putting 285/70R17 on the stock SR5 wheels, just not sure how it would be with the offset.

 

[SweetDave]

Can you post pictures once installed? I’m debating putting 285/70R17 on the stock SR5 wheels, just not sure how it would be with the offset.

Here you go sir, they fit perfectly & fill out the truck beautifully!

 

[TacoJon]

Here you go sir, they fit perfectly & fill out the truck beautifully!

Looks great! I love how easy they made putting bigger tires on these trucks.

 

[TacoChip]

Those look great! Got my truck today. Thanks for posting.

 

[connordc3]

Here you go sir, they fit perfectly & fill out the truck beautifully!

Do these poke out past the fenders? i'm worried about rocks

 

[SweetDave]

Not in the slightest; they’re RIGHT to the edge. Couldn’t be a more perfect fit.

 

[connordc3]

Not in the slightest; they’re RIGHT to the edge. Couldn’t be a more perfect fit.

Awesome! Have you lost mpg with the weight of these tires?

 

[fredygump]

To my knowledge, the biggest size that fits is 255/85r17, mounted on stock wheels. 34.6" diameter. Mickey Thompson Baja Boss.

Lift isn't required and doesn't really matter, because obviously lifting your vehicle doesn't change the size of your wheel wells...

Using stock wheels is ideal for larger tires. Using an aftermarket wheel with lower offset reduces the maximum tire diameter you can fit.

There are a handful of people who have the Baja Boss tires, but not much talk about them. One photo I saw makes it look pretty close with wheels turned, but no rubbing. I wish someone would make a video that makes it more clear.

Actual fuel economy doesn't really change if you "just" change tire diameter. The calculated fuel economy will change, because tire circumference results in a low travel distance measurement (you go further per wheel rotation) You can easily calculate how much distance/ MPG/ mph error you will have with larger tires.

Tinkerer's Adventure youtube channel did a great video explaining what "actually" affects your fuel economy. It isn't the tires!

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