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Old 03-05-2018, 02:56 AM   #31
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I'm currently running Bridgestone Blizzak W965 LT245/75R16 on a 2017 Hymer Aktiv (RAM ProMaster 2500). Yes, I know the RAM ProMaster 2500 stock is a 225. The local American's Tire dealer spoke directly with Bridgestone and was told the 245 was a better tire for our area. It is a tight fit in the rear wheel well, but nothing rubbed when I drove it off the curbs, over obstacles, etc. while at America's Tires (Discount Tire). There is plenty of room in the front wheel well, no issues with turning.

I had these installed in November after having several sliding experiences when coming over the Santiam Pass during an early snow storm. Immediately after having them installed I did a 400 mile road trip from Portland to Bend (via the same Santiam Pass), spent time goofing around on ice and in mud in Bend, then returned to Portland via Mt Hood Hwy. I had arranged to be able to return the tires at no charge if they did not perform to my expectations.

Having driven studded tires for more than 15 years on/over/around Mt Hood, and poor experiences with early studless tires in the early 90s, I was skeptical these would work. I was impressed, and I have actually recommended them to other ProMaster owners who asked.

Oregon snow is often referred to as Cascade Cement because it is heavy, high water content and actually gets icier quicker than other locations I've driven. It tends to rain a bit here in Oregon too, and I have experienced impressive traction on roads with poor drainage.

An added bonus of this larger tire size has been a slight height increase ... cannot remember for sure if it was 1/2" or 1" but it was enough of a change I had to get familiar with how it changed the handling.

Good luck with whatever you end up doing.
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Old 03-05-2018, 11:34 AM   #32
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"An added bonus of this larger tire size has been a slight height increase ... cannot remember for sure if it was 1/2" or 1" but it was enough of a change I had to get familiar with how it changed the handling."

And your speedometer, odometer readings?

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Old 03-05-2018, 12:30 PM   #33
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My co-pilot checked the speed with his Garmin and the less techie WAYZ app on the phone at 55 and 65 mph and found less than 2mph variance. When I first started running larger tires on my trucks more than a decade ago I actually went to a shop to have my odometer and speedometer recalibrated, and the shop owner actually gave me a chart instead that showed the differences. He said he would be happy to make the change if I wanted to spend the $500 or I could have a copy of the chart for free. As for MPG, dunno ... I don'f bother much with that. I track experience by the mile.
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Old 03-05-2018, 01:29 PM   #34
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I think 1/2 or even 1" of added height is not going to be noticeable for almost everyone, especially since if it is just from tire size the suspension stays in exactly the same relative positions.

It if far more likely that any changes felt would be from the tire change itself. All brands and sizes have different characteristics that affect handling, and even going with the same size but in different brands or styles can make a huge difference in handling. DW's Honda CRV was pretty extreme in that way, with a major change for the better when she put Michelin Defenders on it to replace the OEM Bridgestone tires.

We saw about 3% (about 2mph at 60) by going from 245-75-16 to 265-75-16 on our Roadtrek Chevy.
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Old 03-05-2018, 01:37 PM   #35
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Quote:
Originally Posted by 4DMTNS View Post
.... As for MPG, dunno ... I don'f bother much with that. I track experience by the mile.

MPG is important... but most of us put the wrong emphasis on it.


A friend gave up a bargain on an old rig because it only gets 10 mpg.
I asked him if he were to go across the continent and back,
what would be the difference in cost compared to a new rig that gets better mpg?
He did a quick calculation and realized his loss.


MPG is very important if you use it as a daily driver.
Otherwise, it is the experience that counts.

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Old 03-05-2018, 02:14 PM   #36
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With our Chevy Roadtrek we can get decent mileage in the 16+mpg range, but we rarely do because it requires driving 50-55mph. We always seem to be completely willing to buy a bit more gas to spend less time driving and more time playing. On the freeway, we get a comfortable drive even in the wind with the cruise set at 72mph and get 14.5-15mpg most of the time. That gives us an average speed consistently at 67mph and a range of over 700 miles a day if we choose to.

Good mileage is nice, but certainly not of the importance we thought when we first were looking at vans and our early travels.
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Old 03-05-2018, 02:32 PM   #37
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There have been a few Advanced RV's where the customers put on more aggressive tread tires than the Vanco 4season (Sprinter stock) or the better Michelin Defenders (the most popular replacement tires) and reported having more road noise. I wonder if it is worth it for the few times, maybe 1% of the time, that you would desire those kind of tires. I've driven on snow just a few times in 12 years of Class B ownership and those few times I had no problems.

Right now my Michelin Defenders match mileage and MPH accurately. That was not true with my first 2005 model Sprinter and it drove me nuts. I wouldn't dismiss a change, even slight, in that change for a larger diameter tire.

I know there has been much discussion on raising Chevys a couple of inches but I haven't read much about doing the same with a Sprinter that I can recall. Clearance would be my most desire for a 4x4.
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Old 03-05-2018, 10:13 PM   #38
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Quote:
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I know there has been much discussion on raising Chevys a couple of inches but I haven't read much about doing the same with a Sprinter that I can recall. Clearance would be my most desire for a 4x4.
Davyd, you don't absolutely need to have a 4x4 for clearance on a Sprinter. You can just install a small 2" lift kit from Van Compass.

I'm sure you don't really need it but just throwing out there to add to the discussion.

Roadtrek example
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Old 03-13-2018, 11:21 AM   #39
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“Roadtrek used to charge 8k but have jacked the option up to just short of 10k.“

I looked into purchasing a new 4x4 RT 190 last Fall. The quoted MSRP was $25.8K (?!!). Even with a typical 20% discount, that’s STILL $20K for a Quigley 4x4 Conversion that’s available everyday for $12K. Lost interest and upgraded my present RT 210P .
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Old 03-13-2018, 12:53 PM   #40
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While my Roadtrek 210 Popular does good with the lift & Dana 70 locker I'll be taking the rig in for an IFS 4X4 conversion this spring. I'd like it to have all the capability that it will need for snow, sand and back country areas that I plan on seeing out west.

The biggest improvement that I'll need to make to the cabin will be to the cabinet drawer slides. As they are now the drawers vibrate badly on rough roads so converting them over to HD self closing ball bearing slides will be a great improvement.
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