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Aftermarket specs: 6.5x17. ET145.5 8x200. 121-143 mm offset
First question: With an OEM center bore of 142 wouldn’t the aftermarket of 145.5 be far too large?
Second: What do the offset values mean? Is that an acceptable range as in minimum/maximum?
First question: With an OEM center bore of 142 wouldn’t the aftermarket of 145.5 be far too large?
The stock wheels are hub centric so the bore fits tight on the hub to center the wheel. Aftermarket rims are mainly lug centric and you use tapered lug nuts to center the wheel, therefore the bore is slight bigger so it doesn't hit the hub
offset= how much tire poke you get. smaller/more negative of number means a wider stance. my 9" wide 0mm offset racelines sit just barely outside of the fender. you can google stock wheel offset and then compare the numbers to whatever wheel you like the most
Soma wheel manufacturers will include them but not all. I've used plastic ones and had good success but I ran some once on Nissan 370Z and I got the brakes so hot they melted. That was an extreme case though. The metal ones won't melt but make sure to use some anti-seize just to make sure they don't get stuck in the wheel or on the hub.
Your lug nuts are gonna do all the work but the hub rings will help get that wheel perfectly centered on the hub then you can torque the lug nuts down and be good to go. So don't let the wheels you're looking at not being the correct hub diameter stop you from getting the wheels you may want. Shopping for wheels is already stressful enough without your choices being more narrowed down due to hub diameter.
Thanks for the help guys. Ultimately I decided to stick with OEM and hope I can do something to prevent the corrosion problems I have had to put up with for the past six years.
I wouldn't consider a lug centric wheel for a work truck the lugs are designed to hold the wheel on not carry 100% of the weight. Lots of companies manufacture direct bolt on wheels for the Ford dually trucks that are hub centric. Fuel, Forgiato and American Force to name a few. You can also go with 10-lug adapters that are hub centric and bolt pretty much any HD 10-lug wheel on the market up from 19"-30". Lots of new companies forging wheels and most do 10-lug so they don't have to keep so many wheels in stock they can just change the adapter and fit them to most any truck. I prefer direct fit as I don't like adapters if not needed.
