Tire Replacement

I have a 2021 TRD Pro all original and I am looking for the largest tire recommendation that will still fit OE wheels without any modifications to the truck. Pics would be great if you have them.

I just think the original tires are too small...

 

check the stickies in wheel/tire forum, lots of info and pics.

275/70-18 will fit and are metric 33s, . fit with no issue and will look much better on stock trucks vs the 32s that come stock, requires no mods or adjustments. Lots of choices in that size.
285/70s work but few choices in that size.
295/70-18 fit but do get a little close to UCA using stock wheels and since they are wider, you may need to lose air flaps at front bumper and or mod/remove mud flaps.

Being a PRO, you can fit up to 285/75-18s (34.8 tall) on stock wheels. You will probably need to remove the air flaps at bottom of front bumper/wheel arch for those however.