Using tire pressure monitors is probably the best way to go. By the time you notice a flat on a dual axle trailer it is usually too late the tire is beyond repair. I have found the best course of action is to replace all the tires at the same time before they are worn out and check for the correct pressure before each trip. I do the same with wheel bearings i use bearing buddies and give them a shot of grease before each trip.

Ive thought about it actually but i figured green spring or any coil spring will be too under sprung when used on a trailer, i assembled a  special trailer specifically for my mini few months ago and i use two 1750lbs leaf springs and two 3500lbs capacity hub and an EZ lube 1.5inch diameter spindle. One time i drove from az to san diego, and it pulls so steady. 
If i trailer my mini to san diego on new years weekend, ill show it to you bikewiz. 

Has anyone built a dual axle trailer with dual mini rear arms? You could build it pretty narrow, low, maybe use green springs, and for all of the dudes that want to use trailer tires on their mini it would be appropriate.

And I had the joy of using Spank's trailer to tow my Inno from San Diego to Abbotsford and back for MMW 2015. Not a perfect Mini trailer, but pretty darn close! Only problem in 2800 miles was the rough I-5 between L.A. and S.F. busted out a taillight just from the jolts.  A quick trip to a Harbor Freight fixed that!
Inno on Spank's trailer

Leaf springs with shackles are easier to balance the load. Tandem torsion axles are bad IMHO. You have to be more careful in loading and leveling. Too much tongue weight and forward tires take more load due to pickup tail sagging. Need to have leveling equipment. Two wheel setup doesn't have these problems whether shackles or torsion.

Happens all the time. people drive for miles unaware they have a flat. TPMS should flag that condition in an instant. Not a fan of continued driving but trashing a tire is sometimes preferable safety wise. Obviously drive slowly.

So Tyler,did you mean that if you have dual axle(4 wheels) you can keep on driving even if one tire is flat??? im no expert on these things pls educate me.

Depends how the axles are set up.  Some of them are designed to ensure full load sharing between each of the axles.  I destroyed a tyre on a 4 wheel trailer of this type when the tyre let go on a elevated stretch of the freeway with no run off area....

Some one who manufactures boat trailers should be able to provide a custom setup.  Something specially designed for the size/weight of your Mini would be the best option.  You will have no trouble finding a 2 wheel setup that will easily handle the weight of a Mini.

Cheers, Ian

Have been using a wireless tire monitoring system for real time monitor of pressure and temperature. Should flag press /temp problems before blowouts hopefully.

Done the same with 3 axle. Have seen people keep going with single axle. Just destroys the rim too. Nothing like changing a tire on the traffic side on an Interstate feeling the wakes of 18 wheelers.

Same thing with me hauling a MG TD in the box trailer to Florida from California. I hit something on the freeway at 3am in the middle of nowhere, with tractor trailers buzzing by at 80mph I really didn't want to stop and change a wheel! but was able to go to the next town at reduced speed on three tires and ended up replacing 2 tires on one side.

My case for a tandem trailer was re confirmed about 10 years ago when hauling two minis along I-99 at Altoona PA heading north in about 6 inches of wet snow, no plows out yet, tough sledding (no pun intended) and my right rear trailer tire blows out ?.??

Decisions, no way l wanted to stop and change it out in a snow Bank, so just kept on going, exit off the Interstate and drive into Altoona, find a tire shop and in an hour l am back on the road

If l had my single axle trailer, l would have been " Dead in the water"

Big AL

The videos i have seen posted by the company show a side by side 4 wheeler and a Smart car being loaded onto the Aluma trailers.
I looked up both their weights the Polaris came in at 1369 lbs and the Smart car 1800 lbs. As Mini's weigh 1200 to 1500 lbs it would seem the trailers have the hauling capacity.
As always though it pays to ask questions before the sale and be safe. 

Axle spec is the load capacity. Payload is total weight less trailer weight (tare). the 77x12 ft trailer is 570 lbs so it would be sufficient with margin for a 1300 lb mini. Any steel trailer would probably weigh too much necessitating two axles.
I have a single axle trailer with 1/8th in. steel plate but it has a 5000 lb axle.

Its the total capacity that counts not the individual components?

Option is 3k axle so less than 3k standard? 1800?,2200?

They make some nice looking trailers, but I could find no reference to weight capacity? The trailers are sold as utility/ATV trailers and would not perhaps be suitable for the weight of a mini and any other stuff you may need to include in the tow? It may get the job done but for how long before fatigue starts to crack the frame? when buying a trailer it has to be fit for the purpose intended If only for the safety of the mini and not yourself and others.......................

Was thinking of something like this in the future...but one with brakes.  I don't think you need a huge trailer - 68" wide should work.

My 02c I recently sold my double axle aluminum trailer with 9 foot ramps which made loading anything easy i had owned it for 12 years. I have been looking (not seriously as i have a tow dolly) and it will be replaced eventually with a single axle aluminum tilt deck no ramps Mini/Honda sized trailer with no pumps or electric motors just assist hydraulics.
The trailer i have been looking at is made by Aluma and they come in many shapes and sizes. The ones i am looking at are 12 and 14 foot lengths ranging from $2900 for the basic to around $4500 for the larger one with brakes and a heavier rated axle spare tire detachable fenders etc.
I also own a double axle enclosed trailer but you need a pick up to pull it as it is a beast and a brick wall going down the road so fuel mileage is not great.
I learnt from owning my last aluminum trailer and am done with buying steel trailers they just go to $hit and look like crap whether you use them weekly or not, the aluminum ones will go dull but not rot away on you and the resale is far better.

Smaller tires mean more RPMs. Minis weigh more than snowmobiles. Additional weight and more RPMs on the tires probably lead to failure of the tires or bearings. Sounds like a bad idea to me.