305 or 315 tires

[CClements]

I have my Hummer Wheels ready to mount I only need tires. I'm considering The Pro-comps Or Mickey Thompsons.



http://www.procomptires.com/allterrain1.html



http://www.mickeythompsontires.com/cepek_fcii.html



Both are made by Cooper.



I am also vacillating between the 33 and 35s (305 315)



I know lots of folks run 315s but I have not heard much about 305s.



Any words of wisdom?

 

[Motofreak]

Bigger is always. The older and more mature will disagree but what the hell, I'm young and foolish.

 

[Bertram65]

I did not see either of those listed in metric sizes for 17" wheels on either link. The difference in diameter between 305s and 315s assuming a 70% apsect ratio and 17" wheel is about . 5", they are like 34" for the 305s and 34. 6" for the 315s. I would think the 315s would be easier to find if you ever needed a replacement in a hurry as it is more of standard size.

 

[Diesel Dan]

CClements.



It depends on your gearing (3. 73 or 4. 10's)and towing loads. If you have 4. 10s and tow med(5-6k) loads and with your 48re i would choose 315's. Towing a full GCVWR i would get the 305's with a strong e-rated sidewall.



If you have 3. 73s with your 48re i would go no larger than 305's.

this all changes with a 6 spd. 315's all the way. I have 3. 73's and 315's and 6 spd and love the gearing although it is a little much for the 48re.



Goodyear makes a 305/70/17 MTR and it has a very stiff sidewall. Most likely superior to the Coopers( i love the coopers on my wifes car and hope the sidewalls are beefy enough for our loads)



Hope this helps



DD

 

[CClements]

I forgott to mention that I live in Northern Michigan and do lots of miles in the snow. I've always got a load but's almost never over 1300 pounds.



I've always assumed that a 33/ 12. 50 /17 is practically the same as a 305/70/17 correct me if I'm wrong.



I have 373 gears

 

[Diesel Dan]

Thats correct

 

[Blakers]

I forgott to mention that I live in Northern Michigan and do lots of miles in the snow. I've always got a load but's almost never over 1300 pounds.



I've always assumed that a 33/ 12. 50 /17 is practically the same as a 305/70/17 correct me if I'm wrong.

The BFG A/T's in 315 are absolutely wonderful in the snow. Best tires I have ever had and totally night and day from the stock Rugged Trail (rugged street???) tires.



I would like to see them make some 75 series tires for the 17" rims.

 

[CLAYTON]

I have 3. 73s, 48re and 315's and would not change a thing. . I tow frequently with out problems. Just preference on the 305's or 315's.