• Tire Size: 235/40ZR-18
  • Part #: 353947178
  • Serv. Desc.: 95 W
  • UTQG: 400AAA
  • Sidewall: BW
  • Load Range: XL
  • Treadlife Warranty: 30000 miles

per tire

Set of 4 $659.68

Add Road Hazard Insurance


Instinct ZR 235/40ZR18

Ultra high performance with a street-smart appearance

Features & Benefits

  • Solid circumferential rib for enhanced steering response and on-center feel
  • Biting edges on the tread blocks for enhanced wet and winter weather performance
  • Twin orbital channels help to evacuate on site water from the tread contact patch for enhanced wet weather performance
  • Rim protector to help guard rims against accidental curb damage
  • Flame stylized black sidewall for distinctive appearance
  • 30,000 Mile / 50,000 Km Tread Life Limited Warranty

Tire Specifications

Instinct ZR 235/40ZR18

Size UTQG Max. Load Inflation Pressure Tread Depth Tire Weight Rim Width Range Sect. Width Tread Width Overall Diam
235/40ZR-18 400AAA 1,521 lbs N/A 10/32nds 27 lbs 8.0-9.5" 10" N/A 25"

Purchase includes the Fierce Instinct ZR tire only. The wheel rim shown in the picture is not included. Picture provided is a stock picture from the manufacturer and may or may not reflect the actual product being ordered.

All Fierce Instinct ZR tires are continuously developing with manufactured improvements. With that said, Simple Tire and the manufacturers have the right to change these tire specifications at any time without notice or obligation.

If you have any questions, please email us at [email protected]

Please Note: Specifications of the Fierce Instinct ZR tires shown above are listed to be as accurate as possible based on the information provided to us by Fierce tires.

Available Sizes & Prices

Instinct ZR 235/40ZR18

Size Serv. Desc. UTQG Sidewall Part Number Price Qty
215/45ZR17 91W 400AAA BW 353941178 $0 set of 4 $0.00 View Details
215/45ZR18 93W 400AAA BW 353954178 $491.96 set of 4 $122.99 View Details
225/40ZR18 92W 400AAA BW 353946178 $0 set of 4 $0.00 View Details
225/45ZR17 94W 400AAA BW 353942178 $339.96 set of 4 $84.99 View Details
225/45ZR18 95W 400AAA BW 353955178 $615.68 set of 4 $153.92 View Details
225/50ZR17 94W 400AAA BW 353943178 $455.96 set of 4 $113.99 View Details
P235/35ZR19 91W 400AAA BW 353986178 $351.68 set of 4 $87.92 View Details
235/40ZR18 95W 400AAA BW 353947178 $659.68 set of 4 $164.92 View Details
235/45ZR17 94W 400AAA BW 353544178 $267.68 set of 4 $66.92 View Details
235/50ZR18 97W 400AAA BW 353958178 $435.68 set of 4 $108.92 View Details
235/55ZR17 99W 400AAA BW 353945178 $579.68 set of 4 $144.92 View Details
245/35ZR20 95W 400AAA BW 353279178 $0 set of 4 $0.00 View Details
245/40ZR18 93W 400AAA BW 353949178 $731.68 set of 4 $182.92 View Details
245/40ZR19 98W 400AAA BW 353987178 $0 set of 4 $0.00 View Details
245/40ZR17 91W 400AAA BW 353545178 $499.68 set of 4 $124.92 View Details
245/45ZR17 95W 400AAA BW 353547178 $0 set of 4 $0.00 View Details
245/45ZR18 96W 400AAA BW 353956178 $563.96 set of 4 $140.99 View Details
255/40ZR17 94W 400AAA BW 353549178 $491.68 set of 4 $122.92 View Details
255/40ZR18 99W 400AAA BW 353953178 $419.96 set of 4 $104.99 View Details
265/35ZR22 102W 400AAA BW 353989178 $0 set of 4 $0.00 View Details


Instinct ZR 235/40ZR18

Average Rating
John Turner
On 04/03/2017
Dry Wet Snow Comfort Noise Treadwear
On Fierce Instinct ZR Tires
Put these on a 2006 TL. Best tire the car has ever had on it. Great wet traction... I little noisy, but its worth the traction you get. Also drove the car thru snow, did very well with these tires. I will buy these again for this car.
Josh P
On 12/15/2015
Dry Wet Snow Comfort Noise Treadwear
On Fierce Instinct ZR Tires
On 01/02/2014
Dry Wet Snow Comfort Noise Treadwear
On Fierce Instinct ZR Tires

Treadlife Warranty

Instinct ZR 235/40ZR18

This product is covered by a 30,000 mile manufacturer’s treadlife warranty.

Merchandise covered by a manufacturer’s warranty is sold with the warranty by the manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, including any warranty of merchantability or fitness for a particular purpose.

The only tires SimpleTire can warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that manufacturer.

Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same manufacturer, may or may not come with a treadlife warranty.

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