



Nowadays, a number of vehicles (especially the newer ones) use run flat tires instead of the conventional ones. For instance, the BMW645ci is one specific model that runs on RFT. When the time comes around that the tires need to be replaced, the question (for some drivers) might be, ‘is it okay to replace run flat tires with conventional tires?’
The Difference between RFTs and Conventional Tires
One very noticeable difference between vehicles running on RFTs versus vehicles running on conventional tires is the absence of a spare tire. A BMW for instance, does not have a spare tire because it has RFTs on it. On the other hand, a vehicle that runs on conventional tires always has to have a spare tire with it. Run flat tires were created for the purpose of being driven on despite being un-inflated or during emergencies when there is no time for stopping and changing tires. When conventional tires are driven flat, these will quickly be worn down and shredded to pieces.
The Run Flat Tires
Run flat tires are also known as self-supporting tires. These tires have a more stiff internal construction, which then leads to a better riding comfort and handling behavior. To become “self-supporting”, rubber inserts are attached between the next-to-heat-resistant cord layers. This is done for the purpose of preventing reinforcing cords from breaking (in instances where there is no air pressure). Run flat tires also have specialized beads which make it possible for the tire to grip the rim firmly despite air loss.
Which is The Better Tire?
Choosing the better tire between the two depends on a number of factors. If the vehicle originally runs on run flat tires, then the better option would definitely be run flat tires, although admittedly these tires will be more expensive than conventional ones. There may also be a big difference in the feel of driving a car with conventional tires and driving a car with run flat tires. For drivers who do not mind carrying a spare tire in their vehicle and would prefer to spend less on tires, conventional tires might be the better option.
In emergency situations, a car on run flat tires can still continue running despite being deflated whereas with conventional tires there will be a need to stop and change tires. To better aid you about which would be a better tire option for your vehicle, it would also be a good idea to consult with persons working in automobile businesses or someone who works in the tire industry.