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295/70R18?? - Please Help Me Out!

Frankf300

By Frankf300
in Tires, Wheels & TPMS

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Frankf300 Enthusiast

Frankf300

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Ok, so I've literally been contemplating this for months since I bought and leveled my 15 Sierra. I've googled, searched forums, etc on this topic and it seems like us guys running 18" rims are the minority. There are tons of answers when it comes to tire sizes on 20" wheels, but not so much on the 18s. I have a 15 Sierra Crew Cab z71. I prefer 18" because I've always liked less wheel, more rubber and I like the z71 rims and would prefer to keep them. The truck has a RC 2" level. Now I have read plenty of places that 275/70 is common practice, BUT it's mentally killing me that on my old Ram 1500 I went from 20" wheels to 18" and ran 275/70 with not one bit of rub on a stock suspension. Don't get me wrong, I love my GMC, but I'd like to go a little bigger if I can. I've only been able to come across a few posts of people attempting to run 295/70R18 on a level. I'm looking at Coopers and the specs are showing it as a true 12" section width. This is my main concern. I see guys are running tires slightly over 34" with little trouble (zip tie back fender is worst case). But I'm worried about the width and the control arms. Also why it seems to me that 305/65 would be out of the question. One of the guys running 295/70 on a level was actually the old body style and only required minimal trimming. Another post I saw was someone running them on new body style. So...can anyone else shed some light on this? It's tax return season and I'm itching to really compliment the level with some new rubber. Thanks!!

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