The single most common mistake drivers make when changing a flat tire is not moving far enough off the road before starting. On I-40 through Amarillo, traffic moves at highway speeds, and a vehicle parked partly in a travel lane or on a narrow shoulder creates a serious hazard for you and for other drivers. Pull as far right as conditions allow, ideally into a parking lot, a wide gravel shoulder, or a freeway exit ramp.
If you cannot safely reach a secure stopping point, it is better to drive slowly on the flat — even at the risk of damaging the rim — until you reach a safer spot. A damaged rim is replaceable. Getting struck by a passing vehicle is a far more serious consequence.
Many drivers place the floor jack under the nearest visible metal point without locating the vehicle's designated jack points. These reinforced contact points are shown in your owner's manual and are typically marked by notches or arrows along the rocker panel. Placing a jack anywhere else risks crushing the door sill, puncturing the floor pan, or — most dangerously — causing the vehicle to slip off the jack while you are underneath it.
Never get under a vehicle supported only by a floor jack. If you need to remove or inspect anything beneath the car, use jack stands in addition to the jack. The scissor jack included with most vehicles as standard equipment is designed only for temporary roadside tire changes, not for anything more involved.
Before raising the vehicle, loosen the lug nuts slightly while the tire is still on the ground. Trying to break a lug nut loose on a tire that spins freely in the air is frustrating at best and can cause you to lose balance or overtighten incorrectly.
Hand-tightening lug nuts and driving away is a mistake that can cause a wheel to come loose on the highway. Lug nuts must be tightened to the manufacturer's specified torque, which you can find in your owner's manual. Without a torque wrench, tighten the nuts firmly in a star or cross pattern — not in a circle — to ensure even seating of the wheel.
After driving a short distance on a newly mounted spare, pull over and re-check the lug nuts. They can settle slightly after the first few miles, and a quick re-torque ensures the wheel stays secure for the rest of your drive.
Compact spares — the narrow "donut" spare found in many passenger vehicles — are not designed for highway speeds or extended use. They are typically rated for no more than 50 mph and should be used only to reach the nearest service location, not to continue a long trip across the Panhandle at normal highway speeds.
Many drivers in Amarillo change their flat, feel relieved, and then merge directly onto I-40 at 75 mph on a compact spare. This stresses the spare beyond its design limits and can cause a second failure. Check the spare's sidewall for its speed rating before driving, and plan to have the original tire repaired or replaced as soon as possible.
Mounting a spare and driving away without identifying what caused the flat is another common oversight. If a nail or screw caused the puncture, it may still be embedded in the original tire, which can often be repaired. If the cause was a road hazard impact that also damaged the rim, driving on that rim with a new tire can cause another failure.
Before stowing a flat tire, inspect it carefully. Look for the object that caused the damage, check the rim for visible bending or cracking, and note where on the tire the damage occurred. This information is valuable when you talk to a tire technician about whether a repair or full replacement is the right call.
Some situations call for professional assistance rather than a self-service tire change. If you are on a narrow shoulder of a busy Amarillo freeway, if the flat tire is on the traffic side of the vehicle, if you have no functioning spare, or if the damage appears to involve the rim or suspension, contacting a mobile tire service is the safer choice.
There is no shame in recognizing when conditions are too risky for a roadside DIY. A professional technician arrives with the right equipment to work efficiently and safely, and they can assess damage you might miss on your own.