If you dont choose to go with a set of matching front and rears...

Get a set of 996 TT Rears (18") and put the MT DR's on them. They will be within the tolerable limits with your 19's up front.

 

what size and bolt patern and offset and width i need to look for 18" wheels to fit my car and the mt 305 tires? anyone selling something? where can i look for it?

 

Factory 996TT 18s. Cheap and will work prefect.

 

You are going to have to go woth 18". They dont look bad as the dia of the tire is very close to OEM. The side wall is taller but not noticable. Handling drops a bit but I have two sets of wheels and tires....one for RR in 19" and one set for 1/4 mile in 18". I use R888's for the RR.

 

Can I just change the rears for the drag events? and keep my 19" HRE front regular road tires and put 2 rears 996 stock wheels with MT drag radials?

 

I am not sure I nderstand but you cannot run drag radials with non-DR's.

 

Why? what will this affect? i think there should be no problem.

 

Do you think MT drag radials 305x35x18 would be better then 335x30x18 Hoosiers Drag radials?
and would the hoosiers 335 fit onto 996 stock wheels or not? would they clear fenders etc?

which tire hook better on 997.1 TT tiptronic awd car. making say 650-750 awhp.

 

I dont think you need Hoosiers at all. They are more dangerous outside of use on the track while you can purchase MT's in a DOT rating (Street DR II) in the sizes that will fit your car. Honestly given you have AWD and 700WHP I think Corsa Systems would do the trick rather well. You would have the luxury of "hooking up" + excellent handling.

I believe 335 are too wide for your car - I think 315 is the largest you can go.

 

I will put those tires for the strip only. i guess 305x35x18 is the way to go for porsche. and stock tires front.