10% OFF Motorcycle Wheels | up to 21% OFF Trike & Fat Tire Kits

18 INCH HARLEY MOTORCYCLE WHEELS

Front Wheel Sizes: 18” x 3.5” & 18”x 4.25”

Fat Tire Wide Front Wheel Size: 18” x 5.5”

Rear Wheel Sizes: 18” x 3.5”, 18” x 4.25”, 18” x 5.5”, 18” x 8.5”, 18” x 10”, 18” x 10.5” & 18” x 13”

Trike Rear Wheels Size: 18” x 7”

 

SMT’s 18 inch Harley wheels set the standard for great looks and great performance. These American-manufactured 18 inch motorcycle wheels are engineered from high-quality aircraft-grade billet aluminum alloy. Your ride will look like a cut above the rest with custom wheels cut from solid wheel blanks, not cheap mass-produced cast.

Check the SMT Harley wheel fitment chart to see which models, trim levels, and years can fit an 18” wheel without any modifications. For those that need mods, consult our wheel customization & mod requirements chart. Regardless, an SMT expert will call you to verify the order to make sure you have everything right and answer any questions.

Harley 18 inch wheels are available in front and rear 2D and 3D cuts, Bulldog fat tire front wheel, and rear trike wheels. Customize your Harley-Davidson motorcycle with well over 165 wheel designs to choose from, in chrome, black, contrast double-cut, and 6,500+ custom powder coatings.

Available sizes include 18” x 3.5” and 18”x 4.25” front wheels, 18” x 5.5” fat tire wide front wheels, 18” x 3.5”, 18” x 4.25”, 18” x 5.5”, 18” x 8.5”, 18” x 10”, 18” x 10.5” and 18” x 13” rear wheels, and 18” x 17” trike rear wheels.

Whatever style you choose, there’s no compromise on performance or reliability. Your new 18-inch Harley wheels not only look good, but they are easy on your budget thanks to our financing plans.

24 of 25 Items
24 of 25 Items

Why 18" Motorcycle Wheels? There Are 4 Reasons

The simple truth of the matter is that 18 inch wheels look better than your factory wheels and handle better. Especially the Bulldog wide front 18x5.5 inch. It’s a great upgrade in style as well as performance.

01

Sleek Ride

18 inch motorcycle wheels ride as good as it looks. They can improve handling and stability, especially at high speeds. Especially upgrading to the Fat front 18x5.5.

02

Custom Look

SMT offers the largest selection of custom 18 inch motorcycle wheels for Harley-Davidson, Indian, and Metric. Whatever style and color suits your fancy, we can satisfy it.

03

High Quality

You and your bike deserve the best. SMT American-manufactured wheels are made of military aircraft-grade billet aluminum alloy. A huge upgrade in quality compared to cheap mass-produced cast rims.

04

Custom Look

SMT’s lifetime structural warranty guarantees years of trouble-free performance. We take pride in a finished product manufactured according to the highest standards in materials, testing, and construction techniques.

How to Choose SMT’s 18 inch Harley Wheel & Tire Package

  • checkmarkSIZE: Choose 18x3.5 inch or 18x4.25 inch front wheels; 18x5.5 inch fat tire wide front wheel; 18x3.5 inch, 18x4.25 inch, 18x5.5 inch, 18x8.5 inch, 18x10 inch, 18x10.5 inch, and 18x13 inch rear wheels; 18x17 trike rear wheels
  • checkmarkFINISH: Your choice of chrome, black, contrast double-cut, or 6,500+ custom powder coat colors
  • checkmarkTIRE: All tires come mounted & balanced with wheel purchase; 18X3.5" (130/70-18), 18X4.25" (160/60-18), 18X5.5" (180/55-18), 18X3.5" (150/80-18), 18X4.25" (150/70-18), 18X5.5" (180/55-18), 18X8.5" (240/40-18), 18X10 or 18X10.5" (300/35-18), 18X13" (360/30-18), and 18X7" (225/45-18)
  • checkmarkRAKE KIT: Most Harley motorcycles don’t require a rake at this diameter; if you go with a wide front 18 x 5.5 inch wheel, then you will need an American Suspension fork slider/can combo
  • checkmarkROTOR: Keep your existing rotor or up your style with a matching rotor, performance floating rotor, or rapid cooling vented rotor; single or dual
  • checkmarkHUB: Front wheels come with a standard hub; you can upgrade to a lightweight performance hub
  • checkmarkBEARINGS: Standard or ABS bearings

18 Inch Wheels FAQs

01

Can I use my existing tires with new 18 inch alloy wheels?

You will need to purchase tires that are specifically designed for 18 inch wheels. Using the correct tire size is crucial for safety and performance. Avon, Dunlop, Metzeler, Michelin, and Shinko brands all carry tires for 18 inch wheels.

02

Do 18 inch wheels affect fuel efficiency?

The effect on fuel efficiency is minimal. Larger wheels can slightly increase rolling resistance and weight, which affects fuel consumption, but the difference is negligible. We doubt you’ll notice much difference in fuel efficiency.

© 2025 SMT Wheels All rights reserved.

Tag Marketing eCommerce Development & SEO

PRODUCT DISCLAIMER: Pricing is an estimate only and requires a follow-up verification call from our product specialist. Special edition wheels are excluded from promotions, as well as, financing. All orders will be recalculated including shipping when we call to verify and process the order. Please allow 48 hours to be reached by our product specialist. All wheels are custom-made to order, please allow 6-10 weeks to manufacture. Shipping for Hawaii, Alaska, and countries outside the U.S. will be calculated when shipped.

*60% Lighter Street Legal Racing Rims depends on wheel design and size.