im still tryin to figure out tire sizes, some of it is still greek to me....

front: mickey thompson sportsman s/r 26x10r18 on 18x8 rallys
rear: mickey thompson sportsman s/r 26x12r18 on 18x9 1/2 rallys

as far as fittin that much meat in the wheel wells i plan on usin dse subframes front and rear with deep tubs. i just need to know if this is a plausable combo. and remember im still new at learnin tire sizes so forgive me if this a stupid idea.

Hey Skeletor have you checked the threads. If this helps im running 235/40/18 in the front with a 18x7 rims and 285/40/18 in the rear with 18x9.5 rims

i found a conversion calculator online and the fronts are 254/40/18 and the rears are 305/33/18......if i figured it up right.

I'm not really sure I understand what you mean by using DSE subframes front and rear. If your going with a DSE subframe in the front and DSE 4 link with mini tubs your sizes of both the wheels and tires are not optimum. In the front you can use a 275 tire on a 9.5 wheel in the rear you can use a 335 tire on a 12 wheel. If that's not what you mean and the wheel wheels are staying stock as well as the front track then you need a 245 tire on a 8" wheel with 4.75 backspace in the front and a 275 tire on a 9" in the back with a 5.25 backspace. If the tire size converstion you did is correct the front tire is a little bigger than what most people run but MAY work depending on ride height. In the rear a 305 tire will be TOO BIG. I hope this helps. Do a search there is plenty of reading on this. If you go DSE I'm sure they can tell you what will work with their stuff and if you follow their instructions you will be good to go.