RTX ST 18x7.5 +20 Black premium wheel 5x115 71.5mm
RTX

RTX Steel 18x7.5 +20mm Black

4.8(224 store reviews)
Sale −28% off!
$431.98$307.00 each
$1,228.00 set
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Vehicle Compatibility

Customer Reviews

Specifications

Brand RTX
Model Steel
Part Number X48550
Diameter 18"
Width 7.5
Offset +20
Bolt Pattern 5x115 (5x4.53)
Centerbore / Hub 71.5mm
EV Approved No
Load Rating 730 kg / 1609 lb lbs
Weight 33 lbs
Color Black
Finish Black

About the RTX Steel

The RTX ST in 18x7.5 is built around a 5x115 bolt pattern with a 71.5mm centerbore, a specification that corresponds directly to OEM hub dimensions on vehicles such as the Dodge Charger, Dodge Challenger, and Chrysler 300. That centerbore precision matters: when a wheel seats hub-centrically, load transfer occurs through the hub rather than the lug hardware alone, resulting in smoother rotation and reduced long-term stress on fasteners. No hub-centric rings are required for these fitments.

At an 18-inch diameter and 7.5-inch width with a +20mm offset, this configuration places the wheel face with a slightly more aggressive outward position within the wheel well — a look that suits the wide-body proportions of these American performance platforms without sacrificing the clean, composed aesthetic that separates a well-chosen wheel from a merely loud one. The Black finish keeps the visual tone disciplined and purposeful.

A load rating of 730 kg per wheel speaks to the structural demands of heavier rear-wheel-drive platforms, where torsional stress during acceleration places real requirements on wheel integrity. RTX designs the ST to meet those demands with consistency across its full rated range.

Every RTX ST 18x7.5 ships free to the Lower 48 states through TFS Wheels, and every purchase is backed by our 100% fitment guarantee. Learn more through our Shipping and Delivery page, Return Policy, or our FAQ.

Why TFS Wheels

Authorized Dealer — 100% Brand New Wheels

TFS Wheels is an authorized dealer for every brand we carry. Every wheel and tire we ship is brand new, unused, and packaged in its original manufacturer's box. We never sell refurbished, demo, or return-stock product. All manufacturer warranties apply and our warehouse is staffed by people who only handle wheels and tires — no in-transit damage, no test-fits, no surprises.

Free Shipping (Lower 48)

Free shipping on every order — wheels, tires, and accessories — to the contiguous United States. No minimum order, no hidden fees.

Standard delivery is 4–7 business days; expedited is 1–4 business days. Orders placed before 1:00 PM ET typically ship the same day. We do not ship internationally or to PO boxes.

Fitment Guarantee

If a wheel marked "Direct Fit" or "Aftermarket Fit" for your vehicle arrives and does not fit as expected, we cover both the restocking fee and return shipping. The same applies if the bolt pattern does not match — provided your vehicle information was submitted at checkout.

To qualify for the guarantee, enter your year, make, model, and submodel before placing the order.

Manufacturer's Warranty

Every wheel is covered by the full manufacturer's warranty against defects in materials and workmanship. Coverage terms vary by brand — most cover structural integrity for the life of the wheel and finish for 1 to 2 years from purchase. If you ever have a warranty question, contact us first; we work directly with the manufacturer on your behalf so you don't have to.

Accessories Included with Your Order

When you submit your vehicle information at checkout, the right lug nuts and (if needed) hub-centric rings are automatically added to your cart in the correct sizes — no guessing, no separate ordering.

TPMS sensors are also available in the cart. We program each sensor to your vehicle's exact year, make, model, and submodel before shipping, so they arrive ready to sync with your truck or car the moment they're installed. This typically saves customers the dealer or installer's programming fees, which often run several dozen dollars per wheel.

Returns

Returns are accepted within 30 days of purchase on items in new, unused condition. A 25% restocking fee applies to general (change-of-mind) returns, and the buyer covers return shipping.

The restocking fee and return shipping are waived for incorrect items, transit damage, or fitment issues when vehicle information was provided at checkout. Single wheels, single tires, mounted items, special orders, and accessories (lug nuts, locks, hub-centric rings, TPMS sensors, installation kits) are final sale.

Let customers speak for us

from 224 reviews
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Dion trottier
Great

Great wheels

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Azad AZ23 20x9 +20mm Silver with Brushed Spokes and a Chrome Stainless Steel Lip
Anonymous
Awesome wheel

Awesome wheel. Fast shipping and great customer service!

Azad AZ23 20x9 +20mm Silver with Brushed Spokes and a Chrome Stainless Steel Lip
IPW W9104 17x8.5 0mm Satin Black
Levi Broadway
They look way better in person! These were for a

They look way better in person! These were for a dual spare setup and they actually look great and would buy a full set if I was in the market for a full set. The price was great as well.

IPW W9104 17x8.5 0mm Satin Black
Full Throttle FT-5092 15x10 -44mm Gloss Black with Machined Spokes
Sherri H.
Looks Great on my Jeep

Exactly what I was going for. I love the look of these on mu Jeep.

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Ferrada FR4 20x9 +35mm Gloss Black Machined Face Center / Chrome Lip
Kelly-K
Kia Stinger Approved

These wheels make my Kia Stinger pop!

Ferrada FR4 20x9 +35mm Gloss Black Machined Face Center / Chrome Lip
Velgen VFF12 24x10 +18mm Gloss Black
Thomas J. Rozycki, Jr.
Everything was A+

Everything was A+: fast shipping, great communication, a seamless transaction.

Velgen VFF12 24x10 +18mm Gloss Black
Ferrada FR4 20x9 +35mm Gloss Black Machined Face Center / Chrome Lip
Kelly-K
Kia Stinger Approved

People said these wheels wot fit they were wrong People said these wheel would rub they were wrong People said these wheels would not look good on the car they were wrong! So now I don't talk to those people anymore because they were wrong!! Lol
Thanks you guys for a great deal!

Ferrada FR4 20x9 +35mm Gloss Black Machined Face Center / Chrome Lip
RTX BLACK WIDOW 18x8 +40mm Black Machined Grey
Mark Webb
Great looking wheel!

Put these on my 2013 Lincoln MKZ in machined grey. Got tired of the factory 19’s bending every time we hit a pothole. Went with an 18 on these and saved 7 pounds per wheel. They look great and the ride is better too.

RTX BLACK WIDOW 18x8 +40mm Black Machined Grey
Shift Crank H28 18x8.5 +30mm Gloss Black Candy Red Machine
Anonymous
Awesomeness

I had got some rims like these ones before. So I decided to buy more. They’re very awesome looking the color. The depth of the rim is awesome. Looks great on my car.

Shift Crank H28 18x8.5 +30mm Gloss Black Candy Red Machine
RTX Steel 13x5 +40mm Black
William R
Great for subabru sambar

Got these for my subaru sambar, excellent for my needs and low cost

RTX Steel 13x5 +40mm Black
RRW RR2-H Flow Form 17x8.5 0mm Matte Gunmetal
Paul F. In Albuquerque
Great to do business with

Great company to work with in purchasing your new wheels and related products. Initially, I was going to give only 4 stars due to the fact that the wheels I really wanted were actually on backorder despite being advertised as “in stock” on their website and the need to buy the last full set for the advertised price (which further implied the wheels were available). Initially blamed wheel manufacturer for not updating their supply which I believe is true but it’s also TFSWheels’ responsibility to maintain their own site. Nonetheless, TFSWheels was quick to respond and offered to refund my purchase. I decided to pick another wheel that they did have in stock. Throughout the exchange, TFSWheels (Jeremiah) was very responsive to all my questions or concerns. They even made sure if I knew my wheels would fit since I have an older Land Cruiser. Once selected, they stood by their pricing for the new selection and service was outstanding. Wheels arrived in great condition and now I am even happier after seeing my new selection. So 5 stars is the right rating and I would buy again from them!

RRW RR2-H Flow Form 17x8.5 0mm Matte Gunmetal
Vision Wedge 476 22x9.5 +30mm Gunmetal Gray with Machined Spokes
J.Watts
Amazing Wheels

Love the style. Looks stock and classy, not too much. Clients love the exposed red brake calipers and clean look when pulling up.

Vision Wedge 476 22x9.5 +30mm Gunmetal Gray with Machined Spokes
Ferrada FR2 20x9 +35mm Silver Machined Face Center / Chrome Lip
Fabiano Loures
Excellent service! Recommend.

Excellent service provided by Jeremiah. Great communication, went the extra mile trying to find a perfect fit for my car. The wheels were beautiful, great quality, fast shipping, but unfortunately not a fit for my vehicle. Would recommend TFS to anyone who needs new wheels!

Ferrada FR2 20x9 +35mm Silver Machined Face Center / Chrome Lip
Ferrada FR9 20x10 +40mm Brushed with Bronze Tint
Cathy Brady
Amazing wheel!

I absolutely love my wheels!

Ferrada FR9 20x10 +40mm Brushed with Bronze Tint
TFS Wheels
Robin

I was very happy with purchase. Did have a bump with lugs. Jerrimah and worked through it. Just verify some Lexus use lug bolts instead of lug nuts. Very happy with end results

TFS Wheels