MR. DRAG SLEDDER

Do you happen to know what the Back Spacing is on these?

Like GM doesn't know this is an issue!!!! Support would be to make it right for everyone!!!! Mine is a JOKE....And I'm looking at a new 17' why?

Rims and Tire info.?

Also what is the advantage of 20x10's and not 20x9". If they were 20x9" would it still be -11 Offset?

No problem!!! Thank you again for the info.

Hi what back space and offset are you running?

Does this just pop out? Tips on process?

what is the Chalk Test?

My update so far is the same. I'm not getting as low as 13.7, but a good piece of mind.

Ok after reading this, but having now issues I tried it..... It was pretty easy but very nerve wracking to say the least. I used the CRC product since it is specific for the Valves. I sprayed it right into the Throttle Body while my Wife did the Throttle. While letting it soak, I did spray and wipe out the throttle plate area. After the soak, I started the Motor but it started like shit. I backed out garage and when I drove off it was very sluggish and lots of crap out the Exhaust! My Driveway is 1200 feet long and just took it easy going down, but again very sluggish. I stopped and pulled out onto my country road which It bobbled a couple of times and get much better as I was just driving normal. Took it for a 15 drive at varying speeds and it seems fine. I will no what and see long term if it had any affect...... Again, very easy but nerve wracking!!!! lol

Love Mine!!!

LOVE mine!!!!

As stated the same setup even with Tires. I also jacked my Truck up to verify travel on the shocks and it appears with normal driving shock travel is not a concern.

Thanks spurshot for getting this figured out!!! I did the #10/#22, I will say that getting it in the #10 was a F'er!!!! The #22 was cake but works AWESOME!!!

Are you calculating it correctly for the new tire size? or going by the display?

None here

Looks GREAT!!!

275/65R20 11.0 x 34.1

None but I have Factory GMC's so not sure the diff. between them.

it will be off if you didn't have the ECM updated for your tire size. I lost 2mpg that's it.

None what so ever. You just have too pull the inner fender liner back with a cable ties. Both sides took about 3 mins. each....