No, do not mix bias tires with radial tires.
no
manufacturing process of bias & radial tires
bias ply, belted bias, and radial.
Radial tires are worlds beyond bias ply tires. In radial tires, the steel chords are placed in a criss-cross pattern. Whereas bias ply tires are placed flat across the face of the tire. Bias ply tires are much, much harder for the engine to turn and are much harder for the suspension to compensate for. Bias ply tires are almost no longer used. That goes for America at least.
Bias ply tires get a flat spot from sitting but I have yet to see a radial tire do that.
1995
No, it gives messy handling.
Bias tires were the standard until the radial tire became the norm. The difference is in how they are constructed. Bias tires were typically constructed of 4 plys that run at angles to each other and the body of the tire and cross each other. Radial tires have the belts at a 90-degree angle to the tire, and the belts overlap rather than cross each other. Radial tires have another belt, usually of steel cord, running around the tire under the tread. Radial construction allows the sidewall of the tire to flex under loads without affecting the contact of the tread with the road unlike a bias tire that flexes very little. It is this flexing that requires you to use a radial tube in a radial tire. The tube is designed to handle the flexing without overheating as a bias tibe would.
You should get radial tires because if you go to www.mud-throwers.com it lists all of the disadvantages and advantages. So you should spend a little more money on the radial tires.
They are most likely bias ply, from the info you have given. There are typically 3 numbers on a tire & radial tires will have an "R" designation prior to the 3rd number such as: P245-60-R14.
Legality has nothing to do with it. Safety is what you should be concerned with. You should never ever mix Bias & Radial tires on the same vehicle. This will cause the vehicle to handle in an unsafe manner. The handling characteristics of Bias Ply and Radial Ply tires is so very different that it is unsafe to mix them.