Diameter 15"Width 10"Lugs 4Offset +21 mm.Backspacing 6.5 in.Bolt Circle 4.25 in.
Weld RT-S Wheel & Tire Kit
Bolt up a set of these light weight, and stylish 1979-1993 Mustang Weld RT-S wheels for a great looking wheel that still serves it's purpose on the drag strip! Weld has long been known as the leader in Mustang drag racing performance. The RT-S S71 wheel has become the standard for what racers look for in a drag wheel.
Weld Quality Construction
The Weld RT-S S71 features a 5-spoke design that's reminiscent of the classic Weld wheels. These 3-piece modular wheels have a high polished face, and lip that's sure to transform the look and feel of your Mustang. These wheels utilize a forged billet center with cold forged rim shells for strength and durability. These light weight 3-piece wheels can handle a hefty 1,580lbs per wheel and 3,160lbs per axle.
Lug Nut Info
Requires the use of 1/2-20 open end acorn lug nuts WCW-W1012B10K. Not included.
Wheel Clearance Notes/u>
-1979-93 Mustang All: Steering rack limiters may be needed to eliminate rubbing issues when turning.
-1979-86 Mustang All: Requires a wheel spacer OR upgrading to 1987-1993 5.0 struts, spindles & brakes.
-1987-93 Mustang 4-cyl: Requires a wheel spacer OR upgrading to 1987-1993 5.0 struts, spindles & brakes.
-May require an 8MM spacer to keep the grease cap from pushing out the center cap.
- 1979-93 Mustangs All: Quad shocks may need to be reversed or removed for proper fitment. Please check for clearance issues before driving the car.
Will only fit on the rear of the car.
Weld Racing, a market leader in forged wheel technology for your Mustang, was started in 1967. The vision was to build stronger, lighter and truer wheels for both on and off the race track. The technology that dominates Drag Racing and Oval Track Racing is shared with the Car, Truck, and Motorcycle wheel lines. In addition, Weld Racing wheels are newly available for Sand Sports and Off-Road racing.
The Weld Racing organization is a group committed to producing cutting-edge forged alloy wheels of the highest quality to enhance the performance and appearance of race cars, off-road trucks, sand rails, luxury pickups, SUV's, premium motor cars, customs, hot rods, and motorcycles. Shop LatemodelRestoration.com for high quality Weld Racing wheels
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The wheel size is the diameter of the wheel, in inches, not counting the tire.
Modern tires in North America have several other measurements associated with their size.
A tire designated as a "225/70R14" denotes a tire with the following dimensions: width of tread: 225 mm; ratio of tire height to width: 70 percent; rim diameter: 14".
Therefore a 185/70R14 has the same rim diameter and aspect ratio, but a smaller overall diameter and narrower tread face than the 225/70R14.
The easiest way to measure backspace is to lay the wheel face down onto the ground so the backside of the wheel is facing up.
Take a straight edge and lay it diagonally across the inboard flange of the wheel. Take a tape measure and measure the distance from where the straight edge contacts the inboard flange to the hub mounting pad of the wheel. This measurement is the backspace.
The photo below shows three wheels with 2", 3", & 4" backspace.
Wheel Bolt Circle
The bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6, or 8 lug holes. A bolt circle of 4x100 would indicate a 4 lug pattern on a circle with a diameter of 100mm.
The diagram indicates the proper measuring methods. 6 lug wheels are measured like the 4 lug wheels.
The offset, measured in millimeters, can be negative or positive, and is the distance from the hub-mounting surface to the rim's true centerline. A positive offset means the hub-mounting surface is closer to the outside edge of the wheel; a negative offset means the hub-mounting surface is closer to the inside edge of the wheel. Offset affects the scrub radius of the steering and it is advisable to stay within the limits allowed by the vehicle manufacturer. If tires are fitted which are significantly wider than those specified by the manufacturer, a compromise may have to be adopted whereby a wheel with less offset is used to prevent the tire rubbing on the suspension.
Wheel Lug Pattern
Wheel lugs or bolt pattern is merely the number of bolts or lugs on the wheel. As the bolts will be evenly spaced, the number determines the bolt pattern. For example, most U.S. passenger cars have 5 bolts while compact models sometimes have only 4 and pick-up trucks can have as many as 6 or 8.