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Old 07-06-2013, 01:20 AM
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what's the fastest speed to safety drive my JK?

Hey guys I've been driving my new 2013 jeep wrangler unlimited for a month. When ever I'm on highway I don't feel safe driving it faster than 70 miles per hour. Also noticed the speedometer only goes up 100. They are obviously not meant to go fast. My question is how fast can I safely drive me jeep wrangler unlimitedon stock tires on the highway?
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Old 07-06-2013, 01:22 AM   #2
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Quote:
Originally Posted by Frankiemetal View Post
Hey guys I've been driving my new 2013 jeep wrangler unlimited for a month. When ever I'm on highway I don't feel safe driving it faster than 70 miles per hour. Also noticed the speedometer only goes up 100. They are obviously not meant to go fast. My question is how fast can I safely drive me jeep wrangler unlimitedon stock tires on the highway?
I've had mine up to 113 or 114, I don't remember exactly. It felt just fine to me the whole time. Now that I've put 35" tires on 90 is about the max I feel comfortable with.

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Old 07-06-2013, 01:50 AM   #3
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Old 07-06-2013, 02:22 AM   #4
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Originally Posted by Frankiemetal View Post
When ever I'm on highway I don't feel safe driving it faster than 70 miles per hour.
Well, there's your answer.
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Old 07-06-2013, 04:19 AM   #5
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Blew all the way from Omaha to Kansas City in my JKU last week going 85, and from Omaha back to Dallas yesterday going 80. Felt as safe as safe could be. In a JK...different story.
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Old 07-06-2013, 07:10 AM   #6
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I feel perfectly comfortable in mine at 75.
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Old 07-06-2013, 07:55 AM   #7
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Quote:
Originally Posted by mckey73 View Post
I've had mine up to 113 or 114!
This seems about right!
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Old 07-06-2013, 08:11 AM   #8
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I started by going 85. To test its safety at that speed, I sent a long text message. After that went well, I repeated the experiment, only this time I also added eating a sandwhich while texting. I kept doing this, adding 5mph at a time. I was finally able to peg the stock speedo by doing this down a steep hill.

According to my scientific anaylisis, I predict the max safe speed of a JK to be about 140mph. I have my Jeep in the shop getting a supercharger and an extra 5 gears installed so I can still get 20mpg at a comfortable 130.

Can someone pass the baloney?
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Old 07-06-2013, 08:17 AM   #9
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While an F1 driver or maybe Valentino Rossi may feel just fine doing 120 in your Jeep, someone who just got their driving license may not feel comfortable doing over 65, what you feel is the right speed is subjective, it's what YOU FEEL is the top speed. The fact that the speedometer goes to 100 doesn't mean anything, most vehicle manufacturers expect you to take some responsibility and display a minimum of common sense when you get behind the wheel. The other side of me painfully reads your writing and wants to just say 'hammer down good buddy, you can do 150 easy'. "Darwin, your bus is leaving"
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Old 07-06-2013, 08:23 AM   #11
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Quote:
Originally Posted by Frankiemetal View Post
Hey guys I've been driving my new 2013 jeep wrangler unlimited for a month. When ever I'm on highway I don't feel safe driving it faster than 70 miles per hour. Also noticed the speedometer only goes up 100. They are obviously not meant to go fast. My question is how fast can I safely drive me jeep wrangler unlimitedon stock tires on the highway?
Not sure what the speed limit is there, but I would guess a speeding ticket doing over 100 would not be cheap.
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Old 07-06-2013, 08:54 AM   #12
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Changing out the speedometer was one of my first mods. This one is electronic (fancy blue) and goes up to 200 mph. Much cheaper than doing a Hemi swap.
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Old 07-06-2013, 01:03 PM   #13
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Originally Posted by Frankiemetal View Post
My question is how fast can I safely drive me jeep wrangler unlimitedon stock tires on the highway?
Not trying to be glib but the safest speed would be the posted speed limit. I guess that is just the ole LE Officer in me.
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Old 07-06-2013, 01:09 PM   #14
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I do 65 normally in my tj. I just feel anything faster than that just makes the jeep slightly unstable. My bigest fear is getting a tire blowout at that speed. I'm surprised the JK would have any issues at that speed but it helps to have tge tps sensor so you can slow down if it indicates your having a tire issue.
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Old 07-06-2013, 02:42 PM   #15
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Under ideal conditions I think they're "safe" at higher speeds but I usually stay about 65-70, with 75 being max. I don't drive it to get from point A to B quickly; I enjoy the ride.
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Old 07-06-2013, 02:54 PM   #16
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Not trying to be glib but the safest speed would be the posted speed limit. I guess that is just the ole LE Officer in me.
Over here, the posted speed is "safe" under optimal conditions. If conditions are bad such as fog, heavy rain, etc, and the speed limit is 65 and your going 65, you can still get a ticket due to unsafe conditions.

I would agree what others have said, if you don't feel safe at anything over 70-75, don't do it. IMHO safety is based on your skill level and road conditions. An Indy car can be considered "mostly safe" doing 200 with a trained driver. If I got in that car, it would probably be nowhere near as safe.
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Old 07-06-2013, 03:00 PM   #17
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The speed limit.

Mine uses waaaaayyy too much gas over 70.

I had it up to 100 once with stock tires.

Its going to ride a little rough because of the solid axles and short wheel base, but i use the baseline or an old pos pickup truck. If it rides like your crappy 30 year old pickup, something is wrong. If it rides betfer than that, its fine.

Im not totally serious about that, but its going to be a little bit rough....

If its wandering alot you may have a front end problem, even though its brand new. Theres a reason they have a warranty.
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Old 07-06-2013, 03:23 PM   #18
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On 37's and 5.13 gears , I am comfortable doing Mach 1 safely
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Old 07-06-2013, 03:38 PM   #19
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On 37's and 5.13 gears , I am comfortable doing Mach 1 safely
Forget to recalibrate the speedo??
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Old 07-06-2013, 04:54 PM   #20
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Drive no faster than the speed at which you feel comfortable. Public roads are not the place to explore the limits of the vehicle or the driver...
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Old 07-06-2013, 06:04 PM   #21
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Drive no faster than the speed at which you feel comfortable. Public roads are not the place to explore the limits of the vehicle or the driver...
This ^^^^

Plus you will find that road surfaces will change your comfort level in JK, largely due to your own perception and the shorter wheelbase.

For example, crappy concrete interstate sections that are elevated will probably have you backing off 70. Meanwhile a good stretch of smooth road will make your more comfortable.

Also the wind can be a bit of a bother, kind of like when you're on a bike and get the wash from a semi. Just look where you want to go and don't get a death grip on the wheel

(Edit, some Rubicons, like mine, show up with 42 PSI (ish) in the tires. You may find that's too high and makes things a bit bouncy.)
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Old 07-07-2013, 08:32 AM
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OK thanks for advice fellas. I'm not a speed demon. I was just wondering how fast I can safely drive it since is such as unstable and bouncy ride. Nevertheless I still love it. Oh and by the way I'm a police officer ha ha
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Old 07-07-2013, 08:50 AM   #23
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Driving on 128 (Boston) with doors off trying to compete with the rest of traffic can get a bit hairy at times but you get used to it!
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Old 07-07-2013, 08:58 AM   #24
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Driving on 128 (Boston) with doors off trying to compete with the rest of traffic can get a bit hairy at times but you get used to it!
Thats short wheel base doing that. Thats why my big rig tractor has a stretched out frame.....
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Old 07-07-2013, 09:04 AM   #25
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I have driven my 2012 JKU between 75-80 pretty comfortably on a trip from VA to Philly. It is all about how comfortable you are though and also keep in mind braking distances are not that great so always be prepared for the worst.
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Old 07-07-2013, 09:31 AM   #26
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Many things play into how it feels. Wind direction, road condition ect. Mine has felt good at 80 on smooth freeway and no wind and it has felt flighty at 60 with a cross wind on bumpy curvy highway. Your speed should be what feels right for the conditions and feel.And remember its a freaking brick shaped Jeep slower will always be safer.
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Old 07-07-2013, 10:39 AM   #27
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Quote:
Originally Posted by Frankiemetal View Post
OK thanks for advice fellas. I'm not a speed demon. I was just wondering how fast I can safely drive it since is such as unstable and bouncy ride. Nevertheless I still love it. Oh and by the way I'm a police officer ha ha
What? .. LOL

You should know this... The posted speed is not always the safe speed - especially when you're driving in poor conditions.

I guess we should ask you the question: How do I avoid traffic tickets driving a Jeep?

.
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Old 07-07-2013, 10:50 AM   #28
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OK thanks for advice fellas. I'm not a speed demon. I was just wondering how fast I can safely drive it since is such as unstable and bouncy ride. Nevertheless I still love it. Oh and by the way I'm a police officer ha ha
Is it really that much worse than a clown vic?
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Old 07-07-2013, 11:06 AM   #29
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Man those Crown Vics are so stable (114 in wb and low COG) you can find a good stretch of straight road, turn on the cruise control and grab a nap!
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Old 07-07-2013, 11:48 AM
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Best way to avoid traffic ticket it's to be polite and honest. Biggest mistake people make is to ask the cop why are you pulling me over? as soon as we approach the vehicle. Let the cop tell you don't ask. Oh and Yes sir No sir everything. At least it works with when I'm on duty.

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