plus sized tires — questions & rear block info needed

Hey guys I recently picked up a 2018 Tacoma TRD Sport, 6A.

The dealer had already installed a 2” level kit, so about a week after possession I went and had a set of 285/75/16 BFG AT’s installed.

They looked good, but a bit too big at the same time (personal opinion) and as soon as I drove the truck home I felt a noticeable power loss. After 5 days of driving around like this my tire shop graciously swapped me over to a set of 265/75/16 BFG AT’s.

The shop owner told me the BFG’s are very heavy and recommended a few other brands but I kept them as I like the look and white letters.

Truck still feels down on power. And highway it’s not holding gears like it should. All this from going from a 265/70 to a 265/75?? Or is it the weight of my tires?

I was planning to do a catback and a drop in filter or intake... will this help much or what do y’all recommend?

Last I’d like to bring my rear suspension up about an inch.. what’s the best way to do this? Block? AAL? Advice here is appreciated. My truck is a bit nose up.

 

My add-a-lead dramatically improved my ride quality, so it gets my vote. Stock leaf springs need help.

I run 17” rims with c-rated K02 265/70/17 tires and although these are 1” larger than stock (same outside diameter as 265/75/16), the combo is very lightweight so hasn’t noticeably affected my performance or economy.

Tires typically weigh more than wheels, so if you go 17” you typically save on weight, in addition to having more C-rated tire options available.

 

Are they E rated or C rated? Aftermarket or Factory wheels?

 

You're gonna feel it, you're pushing a bigger heavier tire with more rotational mass. Need more little pedal

 

I would start with making sure your truck has the latest TSB applied to it that fixes the gear hunting issues. Mine doesn’t have it but it drives fine for me and I have 275/70/17 KO2’s that are E rated and a 1” lift and I only felt a slight power loss from stock. Try driving it with ETC PWR on too, that will help on the highway and inclines.

You shouldn’t feel a big power loss from your tire size as you’re describing it.