NewHilux.net

just joint the lux club its running 17s stock wondering if i could go to 16s and what offset steal wheel to keep inside the gaurd cheers

The stock 2011 diesel SR5 rims are 30P 17x7.5 alloy. These rims also fit over the bigger 338mm brakes on the 2008-9 TRD’s so there must be a bit of clearance over the smaller 319mm brakes you have. My guess is steel 16” would go close but you might have clearance issues with alloy 16”.
Don’t go any less offset than 5P as you’ll be illegal and may well run into insurance problems in case of an accident. 5P changes your track by exactly 50mm which in most States is the maximum you can change. Personally I’d stay in the 20-30P range and stay with a tyre the same diameter as your original 265/65/17’s, like a 265/70/16. If you go too much bigger you really should run bigger rotors to overcome the loss in braking from the bigger diameter tyres.

Thank you very much for the explanation.
Perla.

I've seen 16x8 +20 steelies on a 2019 hilux and they cleared. I didn't crawl around to see how much they cleared by.

They had 265/75/16s which are good fit for the rim and the offset, but as has been pointed out, the increased diameter and weight of the bigger tire will reduce stopping power.