Moderators, I am taking this thread off topic a bit to address SteveO's questions about wheelchair tires and riding in wet weather. If you think this should be moved to another thread or a different sub forum, please feel free to do so.
SteveO, I use 3 different type of drive tires on my Permobil Wheelchairs. Each of these is available as foam filled or pneumatic. I have used both for all 3 types of tires.
1. Pr1mo Powertrax -
Permobil Flat Free (Foam-Filled) Tire Gray | Standard Tread
These are the standard powerwheelchair drive tires for Permobil and other brands of wheelchairs. I find they have a long life and are good for wet and dry paved surfaces. They are not very good on wet grass and are pretty terrible on mud, snow, sand, etc.
2. Permobil Aggressive Tread tires -
Permobil Aggressive Tread, Flat Free (Foam Filled) Tire 3"W x 14"T Black
These a great tires and the ones I use the most. They do pretty well indoors and quite well in softer soil, light mud, and a bit of snow.
3. Permobil Mud and Snow Tires - (
3.00-8 Drive Tires-Asm. and 210x65 Casters Tires Permobil part number 614750). These are surprisingly good in mud and in snow. They are wider and flatter than even the aggressive tread tire, so have a bigger contact patch. They are also made of a tackier compound, so have good grip, even on a bit of ice. The downside is that they will wear out very, very quickly on asphalt, I discovered this by wearing out a pair in less than 100 miles of riding on asphalt.
I prefer foam filled tires for reliability, but on my C500 wheelchairs, the suspension is not comfortable when using foam filled tires, so I use pneumatic ones. I carry a pump, spare tube, patch kit, and all tools necessary to repair a flat when riding pneumatic tires.
I have found that buying tires from my Durable Medical Equipment (DME) provider to be problematic. They only want to supply the entire wheel with tire already mounted. They usually charge about $1,000 for a set of drive wheels. Worse, it typically takes several months to receive the wheels, because they have to go through their process of getting insurance approval, etc.
For the 4 of my 5 wheelchairs not covered by insurance, I find it much easier to buy off of ebay or buildmywheelchair.com. That way, I can have tires only, at a reasonable price, delivered within about a week.
As for wheelchairs in wet weather, that can be a problem
I do my best to protect my wheelchairs. The control modules are pretty well protected under the shroud, but the joystick module and ICS controls are vulnerable. I always carry a gallon zip lock bag, which comfortably fits over the joystick module and ICS controls to protect them it is wet out.
I also carry a poncho in the pack on the back of the wheelchair, which can provide substantial protection for both me and the wheelchair from the elements.
However, I have been caught out several times where significant electrical parts of the wheelchair became wet.
First, I was watching a geyser erupt at Yellowstone. The wind shifted and the water expelled from the geyser soaked me and the wheelchair. Significantly, the ICS controls collected a lot of water (saturated with silica). The wheelchair quit working. We dried it out using a hair dryer and had it operational after a couple of days, but eventually it needed the ICS module (which lives under the shroud) replaced. This was well over $1,000.
Second, I was caught by an unexpected thunderstorm while riding the dirt roads at our local ski area in the summer. By the time it was over, both the wheelchair and I were thoroughly saturated. I let the wheelchair dry for about 4 or 5 days and it eventually returned to normal operations.
Third, we were on the bike path in the Tetons when a thunderstorm popped over the Grand Teton (to our west). We had kept an eye on the weather, but could not see the storms building on the other side of the Tetons. We got hit by a tremendous downpour and the wheelchair got very wet (as did I). The wheelchair started misbehaving and eventually shut down. We let it dry out for a bit and limped back to the van. After drying for another 3 days, it seemed to return to normal operations.
It is good to have backup wheelchairs!
Steve