Yet anothr 35s tire question thread

[Qball]

I have been reading and thinking about 315/75/16 for a long time and still have some unanswered questions I hope this thread can help answer.

1. I have gone from stock to 285s when I got the rig! it was noticeably slower but with some TLC and elbow grease it is actually faster now than before. The question is what's the difference in terms of feel of how much slower going from 285 to 315? How does it come pare to going from stock to 285? Assuming average tire weight.

2. I am really liking the look and reviews of cooper st maxx tires. Anyone running them can give insight on how they compare to others? Heard they are tougher than dura trac which seems to be one of the favorite here. They also supposed to have great wet and snow traction due to the silica rubber compound.

Here are some of my top choices:
Cooper st maxx
Dura trac(heard they have weak side wall)
Yoko geolander (what I currently have with no complaints at all)

I don't like bfg tires in general, had some of them and wasn't impressed. Poor wet traction, didn't balance and wear well.........

Any other tires i 315 I should consider? I mainly stay on the road so road noise, wet/snow traction is important incase I go to mammoth so most mud tires are out. But I want the most aggressive tires for off road without having poor road manners. This is because I can't go offroad much so when I do go I want make it count and fun instead of worrying about having street tires. I know I know I want perfect everything in a perfect world. Hahaha

 

[Danimal92sport]

Don't think the st maxx comes in a 315/75r16, does it?

There are tons of threads on each of your topics, you could literally read about these subjects for hours on this site.

 

[Azca]

My brother just lost 3, yes three, dura tracs on the same hunting trip due to sidewall damage. Tires had, not that it matters for the sidewall, better than 75% of the tread left and only about a year old. To compare, same trails (but with 315s as apposed to 275s on his taco) not a single issue with my Toyo MTs.

I haven't run the other tires but here the REVOs are pretty good.

Went from stock to 35s, it was slow before now it is slower. Lets face it, if you want performance you have a few choices, put in a V8, turbo or supercharger OR get something else. I do notice a difference but I love the 35s whenver I get in the dirt so the trade off is worth it to me.

As an option, get another set of wheels and get smaller street tires on it and swap them out for the 35s when you are going to have fun.

 

[Douglas S]

I've had two separate trips cut short because of Duratracs on other vehicles.

 

[jkilcullen]

Loved my duratracs and would buy again for a mainly street driven rig, I put about 15k miles on a set of 315/75/17 on my 2500 suburban
. I run MTRs on my 80 though because I need the sidewall strength in the rocks. I went from stock to 315 and had noticeably slower acceleration but after exhaust she feels about as peppy as stock. Interested in what TLC and elbow grease you did to regain some of your power.

 

[jkilcullen]

Something notable to say of Duratracs is that you will not find a tire with better wet and snow traction in this market segment. But as I stated the Suburban was mainly on road other than to go rescue a jeep a couple times. When required they had great traction but did clog up in mud. Thinking you don't encounter much mud the only worry I would have is sidewall strength which fortunately I didn't have to test during my use of the tires.

 

[BrotherRob]

Tire recommendations vary greatly by location and terrain. I would hit up the locals for advise.

My .02 would be to look at Nitto/Toyo ATs for good road/off road performance.

 

[TexasJack]

Toyo 315s weigh 76 lbs. They are the toughest tire with the thickest sidewall of any tire I have run on my 80 since it was new.

 

[sdnative]

Have you considered the Toyo AT2 extreme? I have these in 295s and they do well on the street and off-road. Haven't had them in the snow or rain yet, but the tread and siping is good so I would expect them to do well.

 

[NLXTACY]

Have you considered the Toyo AT2 extreme? I have these in 295s and they do well on the street and off-road. Haven't had them in the snow or rain yet, but the tread and siping is good so I would expect them to do well.

Got the 315 AT Extreme 2s and loving them. I've done 1500 miles of quiet highway, some mud and now some snow. I'm up in Mammoth right now and took some trails despite having a noisy birf. Did fantastic even with the snow/ice/slush/dirt mix.

 

[Qball]

Loved my duratracs and would buy again for a mainly street driven rig, I put about 15k miles on a set of 315/75/17 on my 2500 suburban . I run MTRs on my 80 though because I need the sidewall strength in the rocks. I went from stock to 315 and had noticeably slower acceleration but after exhaust she feels about as peppy as stock. Interested in what TLC and elbow grease you did to regain some of your power.

The 2 things that made the biggest difference is land tank maf housing and advanced timing at dizzy. I also noticed some performance gain when I changed the oil to costco's chevron 10w30 oil. No I don't have any real numbers to back up my claim nor do I care to but it sure feels a lot more pep off the line and on the hills. None of the changes was really instant, guess the computer needs to learn the new settings but my rig would down shift a lot less on the same hill and doesn't feel like it is struggling just to keep speed.

Good example would the the hill by my house, when I first got the rig I can bearly keep 35 up that hill with current 285 tires and now I can easily maintain 40 and definitely not pushing the skinny pedal as much. I also see consistently 13.5 mpg or around 15mpg if all freeway. This is with 2 inch lift and 285 at tires.

Sooo....I know it is a hard to quantify question: just how much slower would it be to go from285 to 315? 2 inch more in diameter and 10lbs of extra rotational weight.



Think I'll cross off dura trac now and add Toyo to my list. I called American tires and they can order st maxx in 315 so I might just bite the bullet and go for it. Price is not bad at 1210 out of the door, I know I am blinded by how cool they look hahaha.

 

[NLXTACY]

I have an SC so it's quite the same but I went from Toyo 295 AT Open Country to Toyo 315 AT X2 and I definitely noticed a loss of power. It's slower off the line and you can feel the weight/size of the tired. I love them but you can feel it. I still have tons of power so it doesn't bother me at all.

 

[scrowley]

I have been tought that each 1 lb. of wheel weight is equal to adding 10lbs of load weight.

Example. +10 lb. on one wheel/tire = 100lbs X 4 wheels/tires = equivalant of throwing 400 lbs in the cruiser.
For referance:
315 KM2's are 66 lbs.
315 Duratracs are 64lbs.
315 Toyo mt are 76 lbs.

 

[BrotherRob]

Sooo....I know it is a hard to quantify question: just how much slower would it be to go from285 to 315? 2 inch more in diameter and 10lbs of extra rotational weight.

In 1st gear performance will be subdued. Otherwise, not much. You'll be able to cruise on the highway at 2000-2200 RPMs but you will want to turn off OD and sometimes downshift on hills. Rotational inertia is your friend on the highway.

 

[Qball]

After some research even copper website does say they have 315 st maxx so hues the guy at American tire was talking about STT? I'll call again tomorrow.

Also dura trac seems to be a good on the road tire with good off road traction but a bit weak on the sidewall. I won't cross it off just yet as it is the lightest 315 tires around. Spinning almost 80 lbs from 57lb will definitely hurt performance so guess dura trac will still be my top pick if cooper doesn't have a 315 sized ST maxx.

 

[Qball]

In 1st gear performance will be subdued. Otherwise, not much. You'll be able to cruise on the highway at 2000-2200 RPMs but you will want to turn off OD and sometimes downshift on hills. Rotational inertia is your friend on the highway.

Thanks, I am getting the impression that the performance lost won't be huge as long as I don't go crazy heavy on the tires. Since I don't do a whole lot of off-roading I don't really require the super tough tires.

 

[Qball]

I have an SC so it's quite the same but I went from Toyo 295 AT Open Country to Toyo 315 AT X2 and I definitely noticed a loss of power. It's slower off the line and you can feel the weight/size of the tired. I love them but you can feel it. I still have tons of power so it doesn't bother me at all.

Sadly I don't have plenty of power to spare so I need to consider my options and compromises carefully.

 

[BrotherRob]

Thanks, I am getting the impression that the performance lost won't be huge as long as I don't go crazy heavy on the tires. Since I don't do a whole lot of off-roading I don't really require the super tough tires.

I upgraded from a 22RE 4Runner on 31". My 80 on 315s is a rocket by comparison.

 

[TexasJack]

I have been tought that each 1 lb. of wheel weight is equal to adding 10lbs of load weight. Example. +10 lb. on one wheel/tire = 100lbs X 4 wheels/tires = equivalant of throwing 400 lbs in the cruiser. For referance: 315 KM2's are 66 lbs. 315 Duratracs are 64lbs. 315 Toyo mt are 76 lbs.

I have run the KM2s and am now running the Toyo MTs. I like the Toyos better and will likely stick with them. I did. Not notice a real big difference in acceleration between them.

 

[hawaiicruz]

Got the 315 AT Extreme 2s and loving them. I've done 1500 miles of quiet highway, some mud and now some snow. I'm up in Mammoth right now and took some trails despite having a noisy birf. Did fantastic even with the snow/ice/slush/dirt mix.

Wow not much snow at Mammoth this year. As far as tech goes if 285s are working for the kind of wheeling you do, why go up in size?