MPGs With 37" Tires For Hybrid 4th Gen Tacoma

rustytaco

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I know fuel efficiency is always a hot topic when it comes to adding weight and things like tires.

I've had my 37s (Arroyo Tires Tamarock RTs) on now for about a month, and done about 3000 miles of combined city and highway driving. For reference, I have a TRD OR Premium Hybrid.

On average, for highway driving going 75+, my MPG was around 12-13. Considering my built 3G on 35s was doing like 9-10, a pretty substantial increase. Obviously there are a lot of factors to consider, like elevation changes, how flat the roads are, wind conditions, etc.

On average, for city driving, my MPG floats around 16-19. Probably averages about 17 or so. Again, on my 3G, the best I ever saw (no regearing) was around 15.

I think a regear could improve these numbers. Add some things like an intake, exhaust, tune - I think 18-20 might be doable, which is pretty impressive.

The 37s account for about a 10% increase in size over stock Off-Road models, and I confirmed this with GPS speed and some simple math. The speedometer shows about 10% less than the correct number. Meaning if I'm going 50 mph, I'm actually going 55.

Included a shot of my average dash MPG, and truck as it sits now.

IMG_6578.jpg


4G-11.jpg
 

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