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Old 05-03-2016, 09:22 AM   #1
mdf
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235/85/16 tires on 2016 AI Lounge EXT 4x4

Hi, I did a search, but couldn't find an answer to these two questions:

1) Can anyone see a problem with installing 235/85/16 tires on the Airstream provided Alcoa rims of my 2016 AI Lounge EXT 4x4?

2) Does anyone know if this slightly taller tire will fit properly in the undercount spare tire carrier?

The reason I ask is that I'm hoping to switch to on/off road tires -- there aren't many that come in the 215 size.

I note that I believe the 235 size is what MB puts on their factory 4x4 16" wheels.

Thanks!
Matt
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Old 05-03-2016, 09:45 AM   #2
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As a general rule, vehicle manufacturers only provide enough offset for the original tire size, and not enough to go wider.

In other words, the duals will kiss - very bad!
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Old 05-03-2016, 10:38 AM   #3
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The reason I ask is that I'm hoping to switch to on/off road tires
There's not much point to it. The 4◊4 Sprinter is for improved wet-pavement traction, and not intended for off-road. Since off-road tires actually have worse traction on pavement caused by the reduced contact surface due to the open tread pattern, you'd be defeating the purpose.
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Old 05-03-2016, 10:52 AM   #4
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If you do a Google image search for Sprinter 4x4 you will find many Sprinters covered in mud or on unimproved surfaces. An Interstate may not be intended to go very far off road but the added ride height for the 4x4s isn't for slick roads.
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Old 05-03-2016, 11:19 AM   #5
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Transfer case necessitates ride height increase.
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Old 05-03-2016, 12:49 PM   #6
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There's not much point to it. The 4◊4 Sprinter is for improved wet-pavement traction, and not intended for off-road. Since off-road tires actually have worse traction on pavement caused by the reduced contact surface due to the open tread pattern, you'd be defeating the purpose.
Although I agree that this thing isn't destined for the rubicon trail, there are many off road "roads" that it would be suitable for, and where these tires would be a big improvement. I have been on many in my old jeep in Joshua Tree for example, where just a quick rain turns dirt roads to semi-mud. A good AT tire excels in these conditions, and is still provides more than acceptable performance on the highway and in snow / rain (albeit not likely as good as the stock tires).

Besides protag, they look cool

I take delivery wed or thurs -- will post some pics.
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Old 05-03-2016, 05:46 PM   #7
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There are lots of threads over on the Sprinter-Forum about putting 235/85-16 tires on a 3500 dually Sprinter. Here is just one with pictures.
http://sprinter-source.com/forum/showthread.php?t=19569

Just search on the tire size and you will find more.


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Old 09-30-2016, 09:04 PM   #8
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Just wondering if the OP went ahead and used this tire size on the Interstate? I am very interested in going this route. I'm just concerned that the duallys in the back will rub since our vans are pretty much loaded all the time.
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Old 10-01-2016, 09:17 AM   #9
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I did not make the change yet as I did an 8000 mile mostly highway trip this summer so stuck with the stock tires. I am still considering it.
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Old 10-01-2016, 05:42 PM   #10
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I did not make the change yet as I did an 8000 mile mostly highway trip this summer so stuck with the stock tires. I am still considering it.
I ordered a set of stock steel dually wheels for 44 bucks each, they were take offs from a RV upfitter. I'm going to get them powder coated black or gunmetal and then mount some Michelin Defender LTX M/S in the 235/85 16 and run those for a bit and see how it goes. I hate the steering wheel shimmy at 65mph, dealer can't figure it out, now says it's a characteristic of the 3500 dually. My concern is the rear tires rubbing each other since the Interstate is so heavy compared to the other cargo 3500 that have this set up.
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Old 10-01-2016, 09:37 PM   #11
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I hate the steering wheel shimmy at 65mph, dealer can't figure it out, now says it's a characteristic of the 3500 dually.
both of mine shook bad like this - have a good tire shop balance them (by removing and remount - vs - adding weights).

good balancing of front tires fixed it in both cases.
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Old 10-02-2016, 12:28 AM   #12
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both of mine shook bad like this - have a good tire shop balance them (by removing and remount - vs - adding weights).

good balancing of front tires fixed it in both cases.
Finding a shop that's familiar with the Alcoa wheels and then willing to go that extra mile is the hard part. I guess I'll continue my quest for a smooth ride past 75 mph.
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Old 11-25-2016, 08:38 AM   #13
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Rebalance is worth your time and money. Our 2017 4x4 is the smoothest AI we've ever owned - remarkably smooth, free of vibration.


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Old 12-28-2016, 10:24 PM   #14
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Got so sick of the steering wheel shakes, I went out a bought 6 new Michelin Defender LTX from the MBZ dealer, stock size(they had a special). So disappointed, it feels worse than the stock Continentals. Each wheel took about 8oz of lead to balance, that seems excessive. Now my steering wheel shakes at 50 and the whole van shakes at 70. Gong back to the dealer tomorrow to have them rebalanced. What's so hard about balancing these wheels? Is there a special adapter needed for the larger diameter hub?

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Rebalance is worth your time and money. Our 2017 4x4 is the smoothest AI we've ever owned - remarkably smooth, free of vibration.


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