265/75R16 or 265/70R16

I'm probably just splitting hairs here, but in the next week or so, I'll be replacing the tires on my newly acquired '17 TRD Offroad. The existing tires are Dick Cepek Trail Country EXP, LT265/75R16. They're practically brand new and on OEM alloys, I think they look great. The problem is road noise.

In reality, this truck won't see much off road action, so such an aggressive tread tire is unnecessary. There are however several lengthy road trips planned if summer ever gets here (weather in NE Ohio sucks). To quiet things down, I'm planning on having different tires installed. OEM sticker calls for P265/70R16, but I'm thinking of 265/75's for the slightly larger diameter.

Any downside for going with the slightly larger tire on an otherwise stock truck?

FWIW, I picked up a set of new, take-off steelies from a 2020 SR to have the LT tires mountedon for winter wheels.

 

When you say "practically brand new". . . What are you talking mileage/age wise?

If you where interested, I have a 19 TRD Offroad with the OEM tires with 5000 miles on them. . . Might be willing to trade.

 

that’s a good tire you currently have there. Once you change to a quieter tire, you may now notice noises you haven’t noticed before lol. (Infamous rear diff howl ). You may want to reconsider

 

Thanks for the offer, but I'm planning on keeping the LT's.

 

I just got new tires installed, (Goodyear Wrangler Fortitude, P265/70R16) and the noise reduction is significant. And Bulalo, you were right...I had no idea my truck had an exhaust note.

 

And more responsive,a lot better gas mileage too

 

The difference is pretty minimal, I wouldn't sweat it too much either way. But:

265/75/16 pros vs stock:

-Slightly more ground clearance
-Usually cheaper because it's a more common size
-Looks better

Cons vs stock:

-Slightly worse gas mileage
-Slightly slower acceleration from a stop (due to taller effective gearing)