Supercharged111
Truly Awesome
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285s look mean on a dually. I think 31s would do it for me though.
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235 85 16 are taller and narrower than your 245 75 16. They will go without a spacer but you need to watch the pressure. A 235 85 is the same height as a 265 75 16, in fact I ran 265's on the front and 235's on the rear for about 6 months and used 4wd multiple times. We are currently running 265 75 16 all of the way around on Pearl.Ah good call.
Do you have any pics of that tire size? Are those what are on the pearl? What size spacer would I need for 235s? Reason I ask is if I need a spacer now, I'd like one big enough to run a larger size like 235/85 for the next tires.
I like the cost and may get that size once these wear out.
@88GMCtruck runs 255's on the black fox.I shoulda ran a 255/85. Tall tire but narrow enough to not balloon all weird.
And minimum spacer is 2". Anything shorter and you have to trim lug studs, and at that point you may as well have gotten thicker spacers and saved the time.
1.5" is the minimum to not trim studs on a GMT400 truck. My 88 had a set of 1.5" spacers way back when with no trimming, and the dually has 1.5" spacers currently with no trimming. GMT800 trucks have a rounded end stud that is longer and they do require a 2" spacer to go without trimming.I shoulda ran a 255/85. Tall tire but narrow enough to not balloon all weird.
And minimum spacer is 2". Anything shorter and you have to trim lug studs, and at that point you may as well have gotten thicker spacers and saved the time.
Yup. These with the spacer don't rub, even at 60PSI with about 11k on the rear axle@88GMCtruck runs 255's on the black fox.
That is one sexy dually!1.5" is the minimum to not trim studs on a GMT400 truck. My 88 had a set of 1.5" spacers way back when with no trimming, and the dually has 1.5" spacers currently with no trimming. GMT800 trucks have a rounded end stud that is longer and they do require a 2" spacer to go without trimming.
Yup. These with the spacer don't rub, even at 60PSI with about 11k on the rear axle
Nice, thanks for the pics! I think a spacer is better safe than sorry, I'm not sure when mine rub aired to 55psi, but i know they rubbed when only aired to about 15 (parked for a year).235 85 16 are taller and narrower than your 245 75 16. They will go without a spacer but you need to watch the pressure. A 235 85 is the same height as a 265 75 16, in fact I ran 265's on the front and 235's on the rear for about 6 months and used 4wd multiple times. We are currently running 265 75 16 all of the way around on Pearl.
This was the 235's without a spacer.
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This is the 265's with a 2.5" spacer. It is intentionally too big so I can use honest to goodness tire chains.
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Crap I didn't even think about the stock stud length interfering with the spacer, good thing I didn't try a 1" spacer.1.5" is the minimum to not trim studs on a GMT400 truck. My 88 had a set of 1.5" spacers way back when with no trimming, and the dually has 1.5" spacers currently with no trimming. GMT800 trucks have a rounded end stud that is longer and they do require a 2" spacer to go without trimming.
Yup. These with the spacer don't rub, even at 60PSI with about 11k on the rear axle
Haha damn, i didn't think about that either.I thought I remembered reading at 1.5 you would have to trim. I know my 2" spacers from Bora don't have much left of the thread sticking out past the nuts (I'll pay more attention the next time I rotate the tires)
Fyi, rotating tires with spacers adds another 16 times I have to torque something.
It's bullshit son, bullshit
Where are you guys hosting pics lately? I've been inching forward on my dually as well. Keepimg a build thread alive usually keeps my motivation up.
Where are you guys hosting pics lately? I've been inching forward on my dually as well. Keepimg a build thread alive usually keeps my motivation up.