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Old 11-15-2013, 08:23 PM   #1
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285 vs 315 road manners

Would like to put 315's on my new jeep but I'm worried about how it will drive on the highway. I've had 325's on my cummins and switched to 285's, the steering is much lighter and the truck doesn't follow the grooves and ruts in the road like it did with the 325's. I had 285's on my LJ which drove fine. Will 315's want to track and wonder on the JK to where it becomes annoying compared to the 285's? Who's had both on a JK to give me first hand feedback? I know the 315's look better and require more gear so just feedback on drivability please..
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Old 11-15-2013, 09:04 PM   #2
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My friend went from 285 to 315, he says he notices it lags more from stop lights, but not bad. I didn't notice much in his Jeep as to wandering into ruts, the TJ I had would do that with 33's though but the 315's on the JKU seem better. Maybe a longer wheelbase helps too.

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Old 11-16-2013, 08:30 AM   #3
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The wider the tire the worse it will handle, but you already knew that
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Old 12-09-2013, 08:59 PM   #4
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Will a 315 duratrac on an AEV Pinter stay under stock fender flares?
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Old 12-09-2013, 10:02 PM   #5
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Will a 315 duratrac on an AEV Pinter stay under stock fender flares?
2" lift + yes. I have 2.5" and 315 Duratrac's, but have flat fenders so plenty of room.

315 vs 285 also depends on the tire. I went from a 35" MTR/K to 315 Duratrac's, and the difference was night and day better.
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Old 12-09-2013, 10:12 PM   #6
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The wider the tire the worse it will handle, but you already knew that
In the 15 years of owning sports cars this is a new one for me. Wider tires=worse handling? How do you figure? Handling is all about the suspension, tires provide the grip, and generally, the more width, the more grip. I have 315s on my rig with a 2.5" lift, and the handling is excellent (more planted than a stock wrangler, but thats thanks to the more aggressive backspacing).
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Old 12-09-2013, 10:24 PM   #7
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Jeeps are not sports cars....wider tires tend to follow the road more. That's my 40 years of driving experience with lifted 4x4s....or maybe I'm a bad driver and just blame it on the trucks all these years.
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Old 12-09-2013, 10:30 PM   #8
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Jeeps are not sports cars....wider tires tend to follow the road more. That's my 40 years of driving experience with lifted 4x4s....or maybe I'm a bad driver and just blame it on the trucks all these years.
Both my last rig and my current rig drive a lot better with wider rubber poking out. I can easily take offramps above the posted speed limit without feeling like it's going to roll over.



Skip to 0:50. The jeep actually has 50/50 weight distribution, and many people are very surprised how well it can handle. I agree, it's not a sports car, but the way I built both of my rigs, the road manners were superb, and they were superb period...not just superb for a jeep.
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Old 12-09-2013, 10:47 PM   #9
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You're right though, width can contribute to tramlining, but I found (since sports cars do it as well) that it's the width of the vehicle (axle stance) that contributes to tramlining more than tires.
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Old 12-10-2013, 09:38 AM   #10
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Both my last rig and my current rig drive a lot better with wider rubber poking out. I can easily take offramps above the posted speed limit without feeling like it's going to roll over .

Quote:
Originally Posted by NFRs2000NYC View Post
You're right though, width can contribute to tramlining, but I found (since sports cars do it as well) that it's the width of the vehicle (axle stance) that contributes to tramlining more than tires.

Yes, but people knowing how to "track" a vehicle > people not knowing

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