Lexani RFX Plus

Lexani RFX Plus 315/35RF21

4.8(256 store reviews)
$532.88 each
$2,131.52 set
or 4 interest-free payments of $532.88 Shop Pay Klarna Afterpay interest-free when paid on time
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Free Shipping US All orders
Fitment Guarantee Risk free
Package Options Save when you build a package
Authorized Dealer 100% brand new wheels
Category
All-Season UHP Run-Flat
Load index
1112,403 lbs per tire
Speed rating
YUp to 186 mph
Know your tire

About the Lexani RFX Plus

Run-Flat Confidence Meets All-Season Performance

Best forDrivers of performance cars, coupes, and sedans who want year-round capability, run-flat safety, and responsive handling on 18–21-inch fitments.

The Lexani RFX Plus is an all-season, ultra-high-performance run-flat tire built for coupes, sedans, sports cars, and performance-oriented vehicles. Its reinforced sidewall construction lets drivers continue traveling up to 50 miles at speeds under 50 mph after a complete loss of tire pressure, delivering both safety and peace of mind without sacrificing everyday performance.

An asymmetrical tread pattern pairs four wide circumferential grooves for hydroplaning resistance with additional inner-rib blades, grooves, and a silica-enhanced compound for improved wet and light-winter traction. Step-shaped tread blocks add mechanical grip, large outer shoulder blocks maximize road contact for cornering confidence, and a noise-absorbing shoulder design reduces cabin vibration. A reinforced bead filler limits heat buildup during zero-pressure operation to minimize irregular wear and prevent separation.

The numbers

Specifications

Size & Dimensions
Brand Lexani
Tire Model RFX Plus
Part Number LXSTRFX213502
Tire Size 315/35RF21
Section Width 315
Aspect Ratio 35
Rim Diameter 21
Overall Diameter 28.66
Overall Width 12.4
Sidewall Black Side Wall
Performance
Speed Rating Y
Load Index 111
Ratings
Mileage Warranty Manufacturer's Warranty
Category
Tire Type All Season
Good to know

Questions about this tire

What does 315/35RF21 111Y mean?

315 is the tread width in millimeters, 35 means the sidewall is 35% of that width, and R21 is the 21-inch rim it mounts on. 111 is the load index (2,403 lbs per tire), and Y is the speed rating (up to 186 mph).

What happens if I get a flat — how does the run-flat system work?

The RFX Plus features reinforced sidewalls capable of bearing the vehicle's full weight even with no air pressure remaining. After a puncture or sudden pressure loss, you can continue driving up to 50 miles at speeds below 50 mph to reach a safe location or service center. A specially designed bead filler also limits heat buildup during that period to reduce the risk of tire separation.

Is the RFX Plus genuinely usable in winter weather?

The RFX Plus is an all-season tire with tread features — including extra inner-rib grooves, blades, and a silica compound — intended to provide traction in wet conditions and light winter weather such as slush or light snow. It is not Three-Peak Mountain Snowflake certified, so for severe winter conditions or heavy snow and ice, a dedicated winter tire will outperform it.

Does the RFX Plus come with a treadwear mileage warranty?

No, Lexani does not back the RFX Plus with a limited treadwear mileage warranty. Coverage is limited to the manufacturer's standard warranty. If a mileage guarantee is a priority, this is worth factoring into your decision.

Will the RFX Plus affect my fuel economy?

The silica-enriched tread compound is formulated to reduce rolling resistance compared to a conventional rubber compound, which can contribute to modest fuel savings over time. Keep in mind that run-flat tires generally carry added weight due to their reinforced sidewalls, which may partially offset efficiency gains.

What vehicle types and rim sizes does the RFX Plus fit?

The RFX Plus is designed for passenger vehicles — specifically coupes, sedans, sports cars, and other performance-oriented cars. TFS Wheels stocks 36 sizes spanning 18-inch through 21-inch rim diameters, covering a broad range of factory and aftermarket fitments in that segment.

The brand

About Lexani Wheels

Lexani is a wheel and tire brand established in the United States, known primarily for serving the luxury and custom vehicle market. The brand has built recognition among enthusiasts who prioritize bold styling and chrome or machined finishes on high-end sedans, SUVs, and custom builds.

Shop all Lexani tires →

Vehicle Compatibility

Buying from TFS Wheels

Shipping, returns & guarantees

Authorized Dealer — 100% Brand New Wheels & Tires

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 or tire 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 and tire 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.

Verified buyers

Owner Reviews