New Fender Flares

[GreatDaneHummer]

Panzer and I have been having a talk about new designed fender flares for the H3 and I thought with so many people talking about them these days I would post up some of our chat: This is what I have been envisioning: Something tucked right up close to the side of the H3 letting the tires hang out. If the weather ever gets normal around here I can get some modeling done to show some.

 

[ReconH3]

They're all the fad. I'm the opposite. I always get wider. On my Hummer I have the Aussie flares that are wider. On my Jeep JK I have +2" wider fenders.

 

[rsc]

Nice. I would prefer something about 1-1.5" wider than stock for the 35" tires, but I can see the desire for a low-profile tube fender.

 

[ZoroTheGreat]

If you go with the low profile tube fenders won't that get rid of the factory turn signals and side markers?


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[amrg]

Tube fenders are nice but not the short ones. Since rancho is out and not everyone can afford a solid axle swap it would be nice to run after market wheels with a wider stance and 37s.
A body lift allows 37s but you can't go much wider with the wheels or you will have all sort of rubbing

 

[Panzer07]

If you go with the low profile tube fenders won't that get rid of the factory turn signals and side markers?


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That could easily be replace with added after market low profile led lights that's the easy part from it all

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[GreatDaneHummer]

I thought even with the body lift (1" from daystar) you still cannot run 37" tires without lots of cutting? I do not want my H3 to look like the red one on here with the edges all cut up to fit those wide Nitto's he has on there.

Tube fenders are nice but not the short ones. Since rancho is out and not everyone can afford a solid axle swap it would be nice to run after market wheels with a wider stance and 37s.
A body lift allows 37s but you can't go much wider with the wheels or you will have all sort of rubbing

 

[amrg]

My point exactly.

With a daystar you CAN run 37s but on stock wheels/offset.

Once you go aftermarket, most people go with less offset (less value or negative) which pushes the tires out. I have +10 offset wheels and with 35s and a 1" body lift I barely clear the rear of the fenders. I would like to add 37s but will diffenetly rub (or do like the red H3)

 

[GreatDaneHummer]

How wide are the axles from wheel mount to wheel mount on the H3?

 

[amrg]

IIRC The rear is 65". The front should be similar

 

[GreatDaneHummer]

I am 17x9 with +12 so 5.5" of backspacing. Factory 16x7.5 with +38 so 5.75" of backspacing. The only major difference is I am running 12.5" wide tires vs stock. I do not think the 37.25x12.70R17 Pitbull Rockers would ever fit without the SAS being done. The 1" body lift only leaves .75" of spacing between the front inner fender well and my 35.20x12.5R17 Pitbull Rockers currently. Even smaller tires like the Mickey Thompson Baja Claws at 36.7x12.5R17 would never fit. So no I do not think any of the 37" tires no matter the offset can fit without some trimming done. *New tires not pre used or warn*

My point exactly.

With a daystar you CAN run 37s but on stock wheels/offset.

Once you go aftermarket, most people go with less offset (less value or negative) which pushes the tires out. I have +10 offset wheels and with 35s and a 1" body lift I barely clear the rear of the fenders. I would like to add 37s but will diffenetly rub (or do like the red H3)

/QUO

 

[amrg]

If you were running stock sized tires, +12mm offset means the centerline of your wheel (also tire) is 26mm (1") extra outward of your hubs over the stock setup.
With your 12.5" wide tire (2" wider than stock), this should translate to your tires sticking out 2" over the stock setup. (1" due to wheels and 1" due to half of extra tire width)

Daystar body lift and 37x13.50R16 interco ss

The guy with the Red H3 was running -12mm offset I believe. Thats 1" outwards over your setup

 

[GreatDaneHummer]

wow this is really impressive! so with stock 16x7.5 with 5.75" backspacing you can run the 37x13.5R16. That is pretty cool man. Does he get lots of rubbing?

 

[amrg]

Couple of guys on another forum run this setup. I believe the rubbing they got was at full lock with the tires stuffed (bottom of the front part of the wheel well)
As for the rear there is a shark tail thing protruding from the body that may come into contact which needed trimming. Either one isnt visible from the outside.

Correction: those other guys ran Irok ND 37x12.5r16

 

[Panzer07]

So I'm gonna jump on the tire thing since we are on the subject...my plan is to get some 40" or 42" wrangler mtr my plan is to have either or mounted on a 10" width rim. So what backspacing should I have. My current set up is the stock rim with 315's and 1.75" adapters. So would this combo be consider a 16x7.5 with a 7.5" back spacing or a 16x7.5 with a 4" back spacing ?!.

My main dilemma is that the of course the 42"(91lbs) is bigger and only 5 lbs heavier than the 40" (86 lbs) as well there's only a $40 difference yet it is 2" bigger and 1 inch wider. Size for 40" is 40x13.5-17 And 42" is 42x14.5-17. Yes I know I'm only in a 10 bolt front but I feel that pair with rcv shaft and a gentle skinny pedal a 42 could easily be the same match as a stock aam-7 with 37.

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[amrg]

Stock wheels + 1.75" spacers translate to 4" backspacing with -6mm offset

Its:

backspacing = (rim width + 1) ÷ 2 + offset in inches

So

BS = (7.5 + 1) ÷ 2 + (-6/25.4)
BS = 4.01

 

[atvspeed4]

We run 37x12.5r16 Iroks on our 2006 H3 with 1" bodylift and stock wheels. Just had to trim shark fin in rear and small piece of plastic on inside of front bumper.

 

[Mb30sdl]

So I'm gonna jump on the tire thing since we are on the subject...my plan is to get some 40" or 42" wrangler mtr my plan is to have either or mounted on a 10" width rim. So what backspacing should I have. My current set up is the stock rim with 315's and 1.75" adapters. So would this combo be consider a 16x7.5 with a 7.5" back spacing or a 16x7.5 with a 4" back spacing ?!.

My main dilemma is that the of course the 42"(91lbs) is bigger and only 5 lbs heavier than the 40" (86 lbs) as well there's only a $40 difference yet it is 2" bigger and 1 inch wider. Size for 40" is 40x13.5-17 And 42" is 42x14.5-17. Yes I know I'm only in a 10 bolt front but I feel that pair with rcv shaft and a gentle skinny pedal a 42 could easily be the same match as a stock aam-7 with 37.

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This is is why u need Dana 60 and not to waist time with d44.

 

[amrg]

That plus the gearing is gona suck! 42s will mean at least 6.XX axle ratio to have similar to stock performance! If you stay with 4.56 forget over drive and 3rd isn't going to be that good either.

Heck @ 40s you will need 5.80 gearing (whatever is available around that) to get stock performance back and this doesn't even consider the performance lost due to tire/wheel weight combo, just the difference in tire diameters!

 

[ReconH3]

I'm running 5.8 with 40s and a V8. On a borderline axle like yours, going up 1" makes all the difference and you want to go up 2".

 

[GreatDaneHummer]

5.38 gear ratio is what all the Jeeps are running with 40" tires and that is pretty much on par with most other trucks for 40" tires too. How are you guys coming up with 5.8 or 6.XX for that matter? Dynatrac also only goes to 5.38 gears unless they did something really out of the ordinary and special just for your H3 Recon?

 

[GreatDaneHummer]

Part of the fender conversation got started with Panzer07 due to his wanting to run 42" tires and I was explaining that per our conversation Recon that the 40" tires are at full stuff rubbing in the rear even with your axle perfectly centered. He wanted to trim fenders to fit the 42" tires. Have you ever been in an off road situation Recon or Chris 06H3 that you really said to yourself darn my 40" tires are just too small I need to go to 42" tires :giggle:

 

[amrg]

New axle ratio = ( New tire diameter / Old tire diameter ) x current axle ratio

For a 40" on an I5 coming from 32s:

New ratio = (40/31.6) x 4.56 = 5.77

For 40" on a V8 coming from 33s:

New ratio = (40/32.6) x 4.10 = 5.03

Generally you go bigger to make up for performance lost due to tire weight.
JKUs with auto start up from 3.73/4.10s, so it makes sense to go to 5.38s (If you use the equation).

 

[GreatDaneHummer]

With that LS376/480 conversion do you even notice 35's? I bet it still drives nicer and faster than a stock H3 Alpha on 33's?

 

[amrg]

Lets just say I baby the truck until Im in second gear before I step on the pedal....