Description

18in Ford Tremor Wheels with 325/60/18 AMP Terrain Pro A/T Tires

When upgrading a Ford Super Duty, nothing beats the authentic look of OEM Ford Performance parts. However, many owners want a more aggressive stance than the stock 285/75/18 rubber offers.

Enter the “poor man’s 37-inch” setup: pairing the iconic 18-inch Tremor wheels with 325/60/18 AMP Terrain Pro A/T tires. This combination delivers a massive width increase and a factory-fit aesthetic that is hard to beat.

Here is everything you need to know about this specific fitment for your F-250 or F-350.

Why Choose OEM Ford Tremor Wheels?

If you are looking for durability and style, the Ford Performance Parts Super Duty Black Matte Wheel Kit (Part Number: M-1007K-1808SD) is the gold standard.

These are not aftermarket replicas; they are the exact wheels originally offered on the Super Duty Tremor package . Here is the specs breakdown:

· Size: 18-inch x 8.0-inch wide
· Bolt Pattern: 8x170mm
· Offset: 40mm
· Finish: Low-Gloss Matte Black

The 40mm offset is the secret sauce for heavy-duty truck owners. Unlike aftermarket wheels that stick out (negative offset) and stress wheel bearings, these tuck perfectly under the fenders while providing that aggressive, factory “super duty” stance .

The Tire Upgrade: 325/60/18 AMP Terrain Pro A/T

The stock Tremor tire is typically a 285/75/18 (roughly 34.8″ x 11.2″). The AMP Terrain Pro A/T in 325/60/18 is a significantly wider footprint measuring approximately 33.9″ tall and 12.8″ wide .

Why AMP Terrain Pro?

AMP Tires are manufactured by The Wheel Group (TWG) and have become a favorite for drivers seeking value without sacrificing aggression. They offer a 60,000-mile limited treadwear warranty, which is rare in this price tier .

· Aggressive Styling: The “Twin Peaks” sidewall design and deep, multi-function tread grooves give the truck a menacing off-road-ready look .
· On-Road Comfort: Despite the aggressive tread, reviews indicate the Terrain Pro A/T is surprisingly quiet on the highway and offers a smooth ride, avoiding the loud hum associated with mud tires .
· Off-Road Capability: The self-cleaning tread and rock ejectors handle gravel, mud, and dirt easily, making it perfect for a Tremor that actually gets used off-road .

Fitment Guide: Will 325/60/18 Fit on a Stock Tremor?

This is the most critical question. The 325/60/18 is a 12.8-inch wide tire mounted on an 8-inch wide wheel.

· Suspension: If you have a stock F-250/350 Tremor (which comes with a factory 2-inch front leveling kit), these will fit with minor to no trimming depending on your model year .
· The Rub Point: Because the tire is so wide, you may experience slight rubbing on the radius arms or the front bumper valence at full lock.
· The Fix: Most owners resolve this with a slight adjustment of the wheel well liner (pushing it forward) or adding 1/4-inch spacers, though the stock +40mm offset helps keep the tire tucked away from the fenders.

Comparison vs. Stock:

· Stock (285/75/18): 34.8″ tall / 11.2″ wide
· Upgrade (325/60/18): 33.9″ tall / 12.8″ wide
· Result: You lose about 0.9 inches of height but gain 1.6 inches of width. This results in a beefier, “squat” muscle truck stance that looks significantly heavier than stock.

Real-World Performance Review

Dry & Highway

The wider contact patch of the 325 tire on the Tremor wheel provides exceptional stability. The AMP Terrain Pro A/T features stepped tread blocks and multi-directional sipes that enhance traction and reduce the “wandering” feeling often found in heavy-duty trucks .

Wet & Snow

While budget tires often struggle in rain, the AMP Terrain Pro A/Ts are designed with deep grooves and an open shoulder to channel water away, reducing hydroplaning. Owners report solid performance in light snow, though heavy winter drivers might look for a 3PMSF-rated alternative .

Durability

The advanced rubber compound resists chipping and cutting. However, some user reviews note that tread life can be inconsistent if rotations are skipped, so stick to a 5,000-mile rotation schedule to protect that 60,000-mile warranty .

Where to Buy This Combo

· Wheels: Look for the Ford Performance M-1007K-1808SD kit. These often come as a set of 4 including TPMS sensors, which is a huge cost saver over buying individual OEM spares .
· Tires: The AMP Terrain Pro A/T in 325/60/18 is available through most online tire retailers and big-box stores.