30 x 9.5 R15 tires for Daily Driver XJ, ZJ, YJ, and TJ
30 x 9.5 R15 in P rated, or Load C rated, is a great size tire for daily driven XJ, ZJ, YJ, or TJ because excellent on road and good off road. An excellent upgrade for an XJ, or ZJ, and an excellent stock size for a YJ or TJ.
P rated tires are passenger car tires. They cost less, ride softer (more comfort), and get better gas mileage30 x 9.5 R15 AT tires fit good on stock XJs. I think fits stock ZJs, but not sure. It fits stock YJs and TJs great.
It's the ideal tire size for someone who wants on and off road performance on a budget, and it's a simple, inexpensive, highly effective upgrade. IMO it's the ideal first upgrade for a new XJ or ZJ owner. I'm on my 3rd Jeep and I've tried many sizes of tires, including smaller and larger sizes, and 30s are my favorite daily driver size because they give an ideal combination of on and off road performance, and decent gas mileage too.
I'm most familiar XJs. For that reason, the following talks about XJs mostly, but the list of tires is useful to anyone interested in 30 x 9.5 R15 tires. This includes people with daily driver XJ, ZJ, YJ, and TJ.
It's the largest tire you can fit on a stock XJ or ZJ. It's also awesome with 1", 1.5", 2", and 2.5" lifts. Most notably Old Man Emu (OME) lifts. It's also the largest tire that works good enough with stock 3.55 gearing, though someday I might regear to 3.73 because I live in mountains.
Some stock XJs might have minor flare rub during articulation while turning sharp. My stock 96 XJ did this with BFG AT, but it was so minor of a rub that I ignored it and it was never a problem. It never rubbed on road, and only rarely rubbed off road. My stock 99 XJ never rubs on or off road, even when articulating and turning sharp (front sway bar connected, rear sway bar removed). I think my stock 99 XJ might even clear my 30" tires during articulation with front sway bar disconnected. This might be partly because my 99 XJ has tow package springs.
My 99 XJ is stock and running 30 x 9.5 R15 AT and nothing has ever rubbed on or off road. I intend to install an OME 1.5" lift (light duty springs) this summer, which will be a 1.25" lift with weight of my skid plates. My 30" tires don't need a lift. I just want a lift.
If you try 30 x 9.5 R15 tires on a stock XJ, it might rub LCAs slightly during sharp turns. This was the case with my stock 96 XJ. If this happens, a slight adjustment to steer stops will fix it, and turning radius still good. Any tire store will adjust steer stops for free, if you bought the tires from them.
The only complaint I've heard about 30 x 9.5 R15 tires is an alleged lack of selection. I have heard this from Jeep owners and tire shops.
So I thought it would be helpful if I posted a list of 30 x 9.5 R15 tires I know of. If you know of additional 30 x 9.5 R15 tires, please post them in this thread.
Below there are sections for highway tires (HT), all season tires (AS), all terrain tires (AT), hybrid tires (part AT, part MT tread), and mud tires (MT).
Kumho makes a few highway tires in this size
Yokohama Geolander HT-S
Nexan Rodian HT
Falken Wildpeak HT
(Falken also makes a few other HT in this size)
Kenda Klever HT
All Season Tires
(between HT and AT for tread)
Yokohama Geolander HT-S
Yokohama Geolander AT-S
Mastercraft Courser LTR (AS)
Hercules All Trac AT (Hercules calls it AT, but really AS)
Kumho Road Venture SAT KL61 (part AS, part AT)
Toyo Open Country AT2 version P (part AS, part AT)
All Terrain Tires
Cooper Discoverer AT3 (I'm running these right now in 30 X 9.5 R15 on stock 99 XJ, great traction tire, very quiet, great ride quality, soft riding on and off road) I like this tire a lot.
Cooper Starfire SF-510 (similar to Cooper ATP) I like this tire.
The indented tires below are brands that are subsidiary companies owned by Cooper, and some are independent companies (not owned by Cooper, but hired Cooper to make their tires). So one way or another, the tires in indented section are made by Cooper.
Hankook Dynapro ATM (AT) I like this tire a lot.
Atturo Trail Blade AT (similar to Cooper ATP and Hankook ATM)
Yokohama Geolander AT-S
Goodyear Silent Armor AT
Kumho Road Venture SAT
Kumho Road Venture AT
Firestone Destination AT
Bridgestone Dueler AT
BFG AT (I previously ran these in 30 X 9.5 R15 on stock 96 XJ, good traction tire, reasonably quiet, great ride quality, soft riding on and off road)
General Grabber AT2 (Tread similar to BFG AT) I previously ran these in 30 x 9.5 R15 on stock 99 XJ, good traction tire, reasonably quiet, harsh ride quality on and off road - every bump hits hard)
Nexan Rodian AT II
Falken Wildpeak AT
Ferderal Couragia AT
Kenda Klever AT
Maxxis MA-751 AT
GT Radial Savero AT
Treadwright Puma AT (tread similar to BFG AT)
Toyo Open Country AT (still available at this time, but will soon be replaced by Toyo AT2)
Toyo Open Country AT2. I like the LT version.
There are 3 versions (P, LT, and Xtreme). Size 30 x 9.5 R15 is LT version, load C.---
Hybrid Tires (between AT and MT for tread)
Michelin LTX MS2 (not sure if this is an AT or a hybrid, you decide) I'd expect this tire to be good on and off road)
Cooper ST (hybrid - crossbreed of AT & MT) I owned this tire before. It's on road performance is OK (between AT & MT) and it's off road performance is excellent. Winter road traction is terrible, until you add extra sipes to center treads. With extra sipes Winter traction is OK.
Dean SXT MT (called MT, but really an aggressive AT or hybrid) It was recently discontinued, but some still availailable new and used. Similar performance to Cooper ST. Needs extra sipes added to center treads for Winter traction.
The less aggressive MT could possibly be called hybrid tires. Some of the MT below are mild or hybrid like, while others are typical MT, and some are very aggressive MT.
Hankook Dynapro MT (highly rated for being good on and off road)
Firestone Destination MT (highly rated for being good on and off road)
Nokian Vativa MT (good on and off road)
Maxxis Bighorn MT-762 (OK on road and very good off road)
Mastercraft Courser MT
BFG KM2 MT
Dunlop Mud Rover MT
Hercules Trail Digger MT
Definity Dakota MT
Federal Couragia MT
Yokohama Geolander MT
Maxxis Trepador 8060 MT
Treadright (several tread choices)
The 3 tires below were good in their day, and are still good for the money, if you can find them. I've read conflicting reports that they are discontinued, and other reports saying they're still made. I currently see sources on the Internet selling them under Trivant brand name.
I've heard these were/are made by BFG, Cavalier, National, and Trivant.
One or all of these were/are made in size 30 X 9.5 R15.
Sport King AT
Traction King (looks like an AT to me)
Mud King MT (looks like a hybrid to me)
I wouldn't be surprised if Les Schwab has a few 30 X 9.5 R15 that I don't know about. Their pitiful website offers no size info.
This is awesome and timely. Exactly what I have been looking for. Thanks for the great write up.
I see you are in Seattle. A 9.5" wide tire is good on wet freeways because little or no hydroplaning. So there's another benefit of 30 x 9.5 R15 tires for you.
A 10.5" wide tire can make a light Jeep (stock XJ or TJ) hydroplane on wet freeway at 65 or 70 mph.
Top Rated ATs
All terrain tires reviews and rankings...
See this thread http://www.jeepforum.com/forum/f15/n...e-one-1527835/
A digital tire pressure guage is most accurate.
Tire Air pressure for 30 x 9.5 R15 load C tires
I arrived at these conclusions after much experimentation for 4 weeks with 2 different brands of AT load-C 30 x 9.5 R15 on my stock XJ with tow package (tow package rides stiffer than standard springs). Experimentation on my XJ started with using tire pressure formula described below for a starting point. Then a chalk test to determine if contact patch flat, except I use duct tape instead of chalk because tape is faster and more convenient to apply, lasts much longer (about 20 to 30 miles), and gives a more accurate test. Then final tests involved road tests checking handling on curvy roads, ride on bumpy roads, and high speed driving to see if it tracks strait or wanders, and testing high speed cornering. In the final tested I changed psi in 0.5 psi increments to find the best. Tire pressure always tested and adjusted on cold tires in garage around 55F at 9 PM. Driving tests were done in various weather conditions from cold and rainy to warm and rainy, to cold and dry, to hot and dry. In addition to road test on city roads, rural highways, and interstate freeways, I also tested on gravel roads and on a very bumpy road paved with baseball size rocks. I was looking for a tire pressure that worked on all paved road conditions, gravel roads, and on the very bumpy lumpy road paved with baseball size rocks. Can one tire pressure work for all those things? Yes. It works good on paved roads and mild off road conditions without need to air down. I think it will also work well for mild Winter road conditions without needing to air down.
Note: Cold pressure, or cold tire pressure, means the car has been sitting parked in the shade for at least an hour before testing tire pressure.
Here are cold tire pressures I find work best: 27 psi front, 24.5 psi rear at air temp around 55F to 60F. If air temp is 67 F to 72F, I want 28 psi front, 25.5 psi rear. If air temp is 79F or higher, I want 28.5 to 29 psi front, 26 to 26.5 psi rear.
With less psi steering wandered on highway. With more psi ride was HARSH on bumps and front tire(s) sometimes bounced off the highway (air born) when hitting worst bumps on highway, which is adversely affects steering and hurts my back.
Note: Rural highways in NW Oregon are poorly maintained. Some rural highways are like prerunning over bumps at 45 to 60 mph.
BTW - Monroe Sensitrac shocks are the softest riding stock length shocks that I know of for a stock XJ. Though even softer (and longer) for front shocks is Old Man Emu TJ comfort shocks N66C (which will fit a stock or low lift XJ). However, the N66C shocks might be discontinued now. I'd better buy another pair while I can.My psi figures for stock XJs are for the 30 x 9.5 R15 load C tires I have used. If you use a different brand or model of tire, your best psi might be 0.5 different than my figures. My figures are for load C tires. If you have a P rated (passenger tire), the same psi might work good, or it might need slightly different psi.
If you want to carry more than 200 lbs in rear cargo area, add 1 psi for every additional 100 lbs of cargo. Note: This info is specific to 30 X 9.5 R15 size tires.Road test your psi. If adjustment is needed, adjust 0.5 psi and test again.
A digital tire pressure guage is most accurate and makes it easy to adjust in 0.5 psi increments.
Stock YJs and TJs are a similar weight as XJs. So the above applies to stock TJs, though there will be slight differences in best psi.
Stock LJs and ZJs are heavier (than XJs) and will need more tire pressure (than XJs).
Thanks for all of the information in this post. Very impressive and very helpful.
Just to add to the list, the Definity Dakota MT from Pep Boys is actually pretty good, and super cheap. I had a set on a stock TJ I used to have.
The Definity Dakota MT looks same as Hercules Trail Digger MT, which is to be expected since both brands are (to the best of my knowledge) owned by Cooper. i.e. - Definity and Hercules are subsidiaries of Cooper (I've heard). So it makes sense their tires look similar to each other, and have similarities to Cooper tires. So that makes them 1st cousins to the Cooper AT3, but at a lower price.
Schwab also makes an Open Country "sport" quiet tire and cheaper than most of the other Open country line BTW Works good in the snow i have found!here in Oregon!
What brand is this tire? Toyo? Other?
It's available in 30 x 9.5 R15 ?
I can't find it on Schwab's website, but that could be a deficiency in their Website.
Most 30 x 9.5 R15 tires are 29.5" tall (manufacturer stated actual diameter).
Some are shorter (such as 29.3"). Some are taller (such as 29.8").
BFG AT and Hankook ATM 30s are 29.5" tall.
Cooper AT3 30s are 29.3" tall. There are many Cooper subsidiary brands of ATs that are also 29.3" tall (Hercules, Definity, Procomp, and others). Point being, 29.3" is a common height. It makes fitment on stock Jeeps without rubbing easy, and works good with stock gearing.
General Grabber AT2 and Hankook Dynapro MT are 29.8" tall.
I owned BFG AT, Grabber AT2, and currently own Cooper AT3. The Cooper AT3 is my favorite of the tires I've tried. The Hankook ATM is my other favorite AT.
The Grabber AT2 was noticeably taller and wider than BFG AT or Cooper AT3.
I have heard the Maxxis Bighorn runs tall, but I haven't checked. Maybe it does.
There may be other taller than average 30s that I don't know about.
The below applies to XJs:
Taller than average 30s would be good, if you have 1.5" to 2" lift, or a tow package XJ (sits a little higher), but on a typical stock XJ the taller than average 30s might rub slightly during tight turns, but probably not enough to be a problem.
With stock diff gears, a taller tire strains the engine and tranny a bit more on hills on highway, and in reverse when trying to back up a hill.
So the taller 30s would be better with 1" to 2" lift, and maybe 3.73 diff gears, but will work with no lift and 3.55 gears.
With no lift and 3.55 diff gears, a shorter 30 x 9.5 R15 is better.
An average height for a 30x9.5R15 is actual diamter 29.5". Less is a short 30 (my Cooper AT3 30s are 29.3").
What I said about diff gears applies to 4L engine with auto transmission. I don't know anything about manual transmission XJs.
I have run 29.5" (BFG AT), 29.8" (Grabber AT2), and 29.3" (Cooper AT3) on two stock XJs with 4L, auto transmission, and 3.55 gears.
IME 3.55 gears worked great for 29.3" tires, OK for 29.5" tires, and strained the engine with 29.8" tires. However, I drive mountain highways a lot. On level highways, all those tire heights work great with 3.55 gears.
Since I drive on mountain highways a lot and will be adding 200 lbs of skidplates, someday I want to regear to 3.73 diff gears. But the 3.55 gears are good if you don't add skid plate weight, or if you live in a level area. In a level area 3.55 would be ideal.
Anyone who comes across this thread and has an interest in 30 x 9.5 R15 tires, please make a post so this thread stays alive.
Thread alive!!!! Thanks helps me...the debate in my head??? Small lift, no lift....30's no rub.... 31's some rub...
Hey Charley, you forgot to list prices!
With my previous '88 XJ, 4.0, auto, 3.55 gears at around sea level, I could run 31x10.50s and be ok. I changed to 4.10, and ran 32s, and wish I had gone 4.56. So I went back to 31s.
3.55 to 3.73 is not much difference, if you change gears, I would highly recommend lower.
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