Quote:
Originally Posted by josephp732
It's not about MPG's, it's about make the TRD Off Road handle and perform a little bit better on my commute, dropping 1lbs of un-sprung rotating mass (such as a wheel, tire or brake rotor) is equivalent of losing up to 20lbs of overall sprung weight. This change also makes the suspension work easier.
I did this on a 2017 Honda Ridgeline and it greatly increased handling and performance, the difference being I kept the same size diameter tires. Yes I agree the RPM's will increase by about ~7 percent or about 150 RPM's at about 60mph.
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You have 3 2019 4Runners. I'm sure you can use one as a guinea pig. I just think it's stupid to downsize tires from the stock size and it would look pretty ridiculous too. Either way do what you want, it's your 4Runner.
