Thoughts on Factory 37s

[R1TVT]

I'm guessing there would be some significant internal debate about mounting anything like a snorkel to the exterior of the vehicle. It will impact efficiency, add wind noise, and is also symbolic of ICE and exhaust - the opposite of their messaging on environmental stewardship and delivering cleaner, more efficient trucks. A better route would be to have it flow out of the rear of the truck at the roofline, but plumbing like that will be a challenge.

It would be cool if they could route intake and exhaust through the A-Pillar and out the back of the rack system, but that would be expensive and every truck isn't going to have a rack with the Harvester. It would also be a thermal challenge and likely heat the exterior surfaces of the vehicle where it gets routed.

Anyway you look at it, the air intake and exhaust for the Harvester is an interesting engineering challenge - particularly for an EV with a series Hybrid configuration (that is a truck) and will be compared to the PURE BEV spec, which will be much simpler and won't need to contend with 2 power systems.

 

[Jamie@ScoutMotors]

Air intake will go up into the c-pillar.

 

[cyure]

We need a place where we can put all these answers we get. Any ideas how we can do this efficiently and keep it clean with just answers?

 

[J Alynn]

We need a place where we can put all these answers we get. Any ideas how we can do this efficiently and keep it clean with just answers?

I wonder if there is a way for @Jamie@ScoutMotors to set it up so any response posts he makes he can duplicated to the thread you started. Not sure if the setup of this forum would allow. Then if he supplies an answer, he duplicates-if he posts happy Friday pics then he just does the main thread. Not wanting more work for Jamie but maybe it’s as simple as him activating something as an admin-almost like an archive folder

 

[SpaceEVDriver]

Air intake will go up into the c-pillar.

Thanks Jamie!

I’ve been wondering how this would be accomplished.
Essentially the engineers have designed a built-in snorkel. That’s awesome!
Now I start wondering about things like water and dust ingress, etc. Issues all of which I’m sure they’ve also considered and solved.

 

[THil08]

Air intake will go up into the c-pillar.

Interesting. Makes me want my Harvester sooner. To see all the crazy engineering stuff that the team has done.

 

[R1TVT]

Air intake will go up into the c-pillar.

Shoulda been a Scout engineer obv's.

 

[maynard]

We need a place where we can put all these answers we get. Any ideas how we can do this efficiently and keep it clean with just answers?

And a big thanks for doing it!

 

[BeerParty]

Air intake will go up into the c-pillar.

Cool, thanks for the info!

 

[TreeKiller]

I saw a video of someone putting 37s on a 4Runner. I didn’t know you had to cut out parts of the wheel well. It’s not just slap the tires on.

Yeah, no.
There aren’t very many stock/from-the-factory vehicles that can accommodate 37” tires.

• Ford Raptor Bronco and Wild Track
  • From the factory
• Ford F-250/F-350 Tremor
  • Only certain tires will fit without modifications
• RAM Power Wagon
  • Rubbing of most tires on various suspension parts at full turn or full stuff
• RAM TRX
  • Most tires fit without modification, but some can rub
• Jeep Wrangler and Gladiator Rubicon
  • Needs modifications like wheel offsets and bumpstop modifications to stop from rubbing

Pretty much every other mass-produced vehicle would need modifications such as removal of firewall materials, sheet metal modifications, potentially removal of safety features such as the “crash bar” that stops the tire from entering the passenger space during an accident, and, of course, lifts and wheel offsets.

Because of the underbody construction of most vehicles, a lift on its own doesn’t raise the lowest point of the vehicle, which is often the at the control arms or the differentials, so the vehicle’s true ground clearance doesn’t increase with a lift, it just allows larger tires to be installed, which is what increases ground clearance.

My '93 Wrangler came from the factory with 29" tires lol. When I bought it about 13 years ago, it had a 3.5" lift and 33s with extended bump stops and factory fenders and fender flares. When I put 35s on it, I moved to a 5.125" suspension lift + 1" body lift, and went back to factory bump stops to provide maximum uptravel. To accommodate the uptravel, I had to cut the front fenders completely off, and remove a lot of sheet metal from the rear quarter panels to create a teardrop shape. Basically just short of a comp cut which I think is ugly and don't want to do.

About 2 months ago, I put on 2" wheel spacers and finally moved up to 37s. Even with all the added clearance, they will jam all the way up into the fenders under maximum articulation. Here's what it looks like now. I can't cut the front anymore because there's nothing left to cut, and I don't want to comp cut the rear, so I have decided to add the extended bump stops back in.

Anyway, yeah, cutting is definitely a thing. I sure wouldn't do it to my newer vehicles though, and I definitely wouldn't do it to my (future) Scout.

 

[dreamweaver]

My '93 Wrangler came from the factory with 29" tires lol. When I bought it about 13 years ago, it had a 3.5" lift and 33s with extended bump stops and factory fenders and fender flares. When I put 35s on it, I moved to a 5.125" suspension lift + 1" body lift, and went back to factory bump stops to provide maximum uptravel. To accommodate the uptravel, I had to cut the front fenders completely off, and remove a lot of sheet metal from the rear quarter panels to create a teardrop shape. Basically just short of a comp cut which I think is ugly and don't want to do.

About 2 months ago, I put on 2" wheel spacers and finally moved up to 37s. Even with all the added clearance, they will jam all the way up into the fenders under maximum articulation. Here's what it looks like now. I can't cut the front anymore because there's nothing left to cut, and I don't want to comp cut the rear, so I have decided to add the extended bump stops back in.

Anyway, yeah, cutting is definitely a thing. I sure wouldn't do it to my newer vehicles though, and I definitely wouldn't do it to my (future) Scout.

Looks like FUN!

 

[TreeKiller]

Looks like FUN!

It really is!

 

[04Ram2500Hemi]

My '93 Wrangler came from the factory with 29" tires lol. When I bought it about 13 years ago, it had a 3.5" lift and 33s with extended bump stops and factory fenders and fender flares. When I put 35s on it, I moved to a 5.125" suspension lift + 1" body lift, and went back to factory bump stops to provide maximum uptravel. To accommodate the uptravel, I had to cut the front fenders completely off, and remove a lot of sheet metal from the rear quarter panels to create a teardrop shape. Basically just short of a comp cut which I think is ugly and don't want to do.

About 2 months ago, I put on 2" wheel spacers and finally moved up to 37s. Even with all the added clearance, they will jam all the way up into the fenders under maximum articulation. Here's what it looks like now. I can't cut the front anymore because there's nothing left to cut, and I don't want to comp cut the rear, so I have decided to add the extended bump stops back in.

Anyway, yeah, cutting is definitely a thing. I sure wouldn't do it to my newer vehicles though, and I definitely wouldn't do it to my (future) Scout.

It’s nice to know there’s still a 12 year old inside of you!

 

[dreamweaver]

It’s nice to know there’s still a 12 year old inside of you!

So your saying TreeKiller needs one of these on their birthday.

 

[TreeKiller]

So your saying TreeKiller needs one of these on their birthday.

View attachment 12808

LOL. If you put how I actually look and feel on there, I'd be REALLY OLD.

 

[dreamweaver]

LOL. If you put how I actually look and feel on there, I'd be REALLY OLD.

It's only frosting. We can fix that for ya.

 

[Michael Gary Scout]

There are no current plans to offer a factory 37" tire. That doesn't mean we might not in the distant future, but nothing planned at this point. We merely wanted to showcase that they fit on the concept and acknowledge that some people will mod them this way.

If we did offer 37" tires there is no doubt we would do all the required engineering, R&D and testing first to support it.

Thank you for taking the time to respond. I really appreciate both your engagement here and Scout’s commitment to doing things the right way rather than rushing features to market. That kind of discipline is refreshing to see, especially from a brand that clearly cares about long-term durability and real-world use.

Not long after my original post, I came across the Silo Green Scout Terra Concept article in the stories tab - and I have to say, it's stunning. Beautifully executed. Between that concept and the thoughtful feedback from folks in this thread, it honestly had me rethinking the pros and cons of running larger-diameter tires on a future Terra.

I think everyone here already understands - and has done a great job documenting - the downsides of 37s. Where I was hoping to add to the conversation was simply around the legitimate benefits as well, particularly given terra's body-on-frame design and solid rear axle. On a solid axle truck, tire diameter is really the only way to raise the differential pumpkin, which makes it a meaningful variable off-road.

When tire diameter increases, the axial center line rises by half the diameter change:

• 30” to 33”: +1.5”
• 30” to 35”: +2.5”
• 30” to 37”: +3.5”

That differential clearance is arguably the most important clearance number off road, because it's the one you can't “air-suspension” your way out of on a solid axle. Air suspension can be fantastic for situational gains and approach, departure, and breakover angles, but it can't replace tire diameter for those hard-limit clearance points.

Even with significant suspension adjustability, larger tires still serve a real purpose: they raised the floor when the suspension compresses mid-obstacle, improves obstacle rollover, and allows you to use the same functional clearance with less overall suspension height - generally a win for stability, joint angles, and component longevity.

Ultimately, I completely understand why there are no plans for a factory 37 at this point, and I respect that decision. My goal here was never to push for one outcome, but simply to explore the trade space thoughtfully. The fact that Scout is willing to showcase concepts, engage openly, and acknowledge how people actually use these trucks goes a long way.

Thanks again for being part of the discussion - and for building something that clearly has a lot of us excited about what's coming.

 

[Tyler88]

Air intake will go up into the c-pillar.

would be cool/ interesting to see if there would be some sort of venting/air scoop on the side or sides similar to the original VW busses. Though this is probably not required depending on the required air flow for the intake.

 

[Tyler88]

Also, I am team, 35-inch tires are as big as anyone needs, I would not go bigger if you were going to daily drive and do highway driving a lot.

 

[cyure]

Also, I am team, 35-inch tires are as big as anyone needs, I would not go bigger if you were going to daily drive and do highway driving a lot.

I was sold on 35s but changed my mind to 33s. They are plenty big enough for my needs and I want better range for my BEV.