TIRE SWAP-Compact Jr. - Fiberglass RV


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Old 07-13-2008, 09:41 AM   #1
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I would like to know if it is possible to switch to 14" rims and tires on my compact Jr.
I currently have 13" 4 hole white spokers but would like to change over to
14" 4 lug.(If I can find them)
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Old 07-13-2008, 09:46 AM   #2
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Jeff remember, it's more than the size of the wheel, the tire width and height also needs to be taken into account. In fact maybe more so. For instance, on the Scamp.. there's actually a "fender" cover the tire/wheel needs to fit up inside. Too wide a tire and even though height may be okay... So, just bear that in mind when looking to changeover.
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Old 07-13-2008, 10:06 AM   #3
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Jeff remember, it's more than the size of the wheel, the tire width and height also needs to be taken into account. In fact maybe more so. For instance, on the Scamp.. there's actually a "fender" cover the tire/wheel needs to fit up inside. Too wide a tire and even though height may be okay... So, just bear that in mind when looking to changeover.
Thanks....There is plenty of room and I would be staying with same tire width.I think this rig would trail better with 14's as it is a little heavier
with the modifications that were done.Even with several hitch inserts,the trailer isn't quite level and tends to wander over bumps or in
wind.I don't drive much over 55 with trailer in tow,even with my V-8 Tundra. Maybe a changeover to a torsion axle from the stock leaf springs
might be a good addition?
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Old 07-13-2008, 11:29 AM   #4
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Hi Jeff -
I'm new to our Compact Jr., but we're currently going through ALL the systems to prep it for a big road trip. We just replaced the tires and purchased a spare wheel (and tire). I stuck with the 13" because I notice that, loaded, the trailer tends to run pretty close to the tire. I also noticed that at one time someone allowed the wheel to run in the well long enough to melt a bit of the well (and probably do some damage to the tire).

The axle change sounds good...

Jen
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Old 07-13-2008, 12:31 PM   #5
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Thanks...every bit of info helps.
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Old 07-13-2008, 02:55 PM   #6
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When I bought my Compact Jr. 4 years ago it had old passenger car tires on it and it wandered a bit on the way home from the purhcase point. I replaced the tires with Goodyear Marathon 175/80R 13 (C load rating) on the stock rims. No problems with more than 10,000 miles of towing.

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Old 07-13-2008, 03:44 PM   #7
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My Compact also has what look like fairly original rims, 13", with passenger car tires on them. I'll be watching to see what you figure out for your rig, and to see how it works for you, as I've thought of switching out to a 14" rim, or maybe converting to trailer tires. Even if I stayed with 13" rims I'd like to trade out to something else as I'm not so crazy about the existing rims as far as looks, plus my spare is a different rim and doesn't match.
So keep us posted on here with what you do, and how it turns out! Joe
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Old 07-13-2008, 04:29 PM   #8
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Thanks Tom.I have regular trailer tires the size that is called for with new white spokers.I have the front as level as possible with the
bumper of my Tundra.The spare is same tire and rim. I have tried different tire pressures as low as 26 lbs.(recommended by the
original owner) I bought it from.It had some alterations with new pretty heavy duty plywood cabinetry and built in AC,Micro and nice refer.
They have given the trailer a little more weight in the back, I presume. Normally one might want a little more weight closer to the tongue
for a better pull? The leaf springs are original and might need re-curve or extra load leveler spring added as I find that wind ,semis
and rough roads make the camper more jittery than I like.For one this small I wouldn't thing an equalizer hitch would be necesssary?
I don't drive mucch more than 55-60 when pulling so as to avoid panic stops with a brakeless camper. I thought that going to a 14"
trailer tire might help/There seems to be room in the wheel well.It is possible that a torsion axle might be a better solution?My old 10 foot
Scotty had individual wheel suspension(torsion) and it pulled much better and was onlt 850 pounds.
If I increase the tire pressure to 29-30 psi, it make it more jumpy on rough roads,RR tracks or when semis try to suck you off the road.
What is your guess about tires.
Jeff
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Old 07-13-2008, 09:39 PM   #9
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Years ago we pulled a Compact Jr with a Peugeot 404 SW. It had stock 13 inch wheels and the nylon bias ply tires that were standard at the time, circa 1975. Sway was not a problem.

I suspect the short wheel base of your CJ is a significant factor.

Presently I tow either a 16ft Scamp or a 26ft Avion with an 83 diesel K5 Jimmy (Blazer). With a standard hitch it was OK with the Scamp, but terrible with the Avion.

I went for the expense of a Pull Rite hitch and it squared everything away, sway wise.

I would save your money for respringing. If you need to get more wheel well clearance, you can quite easily install blocks under the springs using longer spring shackles. Or you can make longer spring hangers. Either way will work. With torsion bars, it is more difficult.

Try to shift weight toward the front and that may help your sway problem considerably.
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Old 07-14-2008, 05:01 AM   #10
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Thanks.......When I bought this unit the owner had to bags of sand up front.I took them out after towing the camper home.It was a little squirely
even with the 100 lbs. of sand.I pull with a short box Tundra.I also changed to a lower ball. That helped some.The pull isn't too bad on smooth
interstates but bumps or irregular surfaces seem to make the trailer move a little side to side.Wet towing could be dangerous.
Do you think an eqilizer hitch might be a good remedy? There seem to be many on the market.
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Old 07-14-2008, 01:38 PM   #11
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Jeff,
You did not mention the age or mileage on your Tundra. My only sway problems with the Compact after new tires was when I hooked it to a 1988 Jeep Cherokee. Any speed over 55 mph was white knuckle sway, but I knew that the trailer towed fine with other TVs. Turned out that the Jeep needed rear shocks. The old shocks weren't bad enough to notice a problem until I tried towing with them. Might be worth a check.

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Old 07-14-2008, 02:34 PM   #12
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Jeff,
You did not mention the age or mileage on your Tundra. My only sway problems with the Compact after new tires was when I hooked it to a 1988 Jeep Cherokee. Any speed over 55 mph was white knuckle sway, but I knew that the trailer towed fine with other TVs. Turned out that the Jeep needed rear shocks. The old shocks weren't bad enough to notice a problem until I tried towing with them. Might be worth a check.

Tom Trostel
Thanks.It is 04 Tundra/short box /40,000 easy miles/V-8/factory towing package......2 wheel drive/factory shocks.
I was considering new airshocks like I had on my last truck.I pulled my old scotty all over the country and never
noticed it was hooked on.The springs on the CJ are probably original and a bit weak.
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Old 07-14-2008, 10:00 PM   #13
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You mentioned that you added weight behind the axle. Is it possible that you eliminated (or greatly reduced) the ten to fifteen percent weight requirement on the tongue?
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Old 07-14-2008, 10:40 PM   #14
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As a reference point, my trailer tongue weight is 185 pounds.

Tom Trostel
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