I did both sides on both my 4Runnerand my wife's 3G Tacoma. We tow an excursion trailer from time to time, as well as a cargo trailer. Having them on both sides helps when towing, without having those extra large clamp on towing mirrors.
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2019 MGM TRD ORP
Dobinsons IMS 3in lift, FN f(x) Pros 17x8in 0 offset, 285/70 C load Nitto Ridge Grapplers, and all sorts of other fun stuff
shootn4runner on IG