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Bridgestone Potenza RE050A Tire 275/40 R18 99W SL BSW BM RF



Model #34111

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Bridgestone engineered the Potenza RE050A Run Flat performance tire to deliver sport handling and the assurance of run-flat technology. This tire uses a solid circumferential center rib to increase steering response and straight-line stability, along with stabilized center blocks for better handling. The tire tread features a block and slick combination that provides excellent dry grip and dependable wet grip, and circumferential grooves to help resist hydroplaning. For your safety, the tire incorporates run flat technology that allows you to temporarily drive on a flat tire. For great performance, and the extra security of run-flat capability, equip your sports coupe or sedan with the Bridgestone Potenza RE050 Run Flat performance tire.


  • Wheel Diameter: 18
  • Aspect Ratio: 40
  • Section Width (Cross Section): 275
  • Overall Diameter: 27
  • Rim Width Range: 9.0-11.0
  • Weight: 34
  • Tread Depth: 11
  • Tread Grade: 140
  • Traction Grade: A
  • Load Index: 99
  • Max PSI: 51
  • Speed Rating (up to X mph): Up to 168 mph
  • Temperature Grade: A
  • Vendor Product Number / MPN: 034111

Other Part Numbers:
Bridgestone #25431

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Bridgestone Corporation purchased Firestone in 1974 for $2.6 billion, transforming the companies combined operations into the worlds largest tire and rubber company. The operations in the Americas were renamed Bridgestone/Firestone, Inc. and became the largest subsidiary of Bridgestone. As part of its integration with Bridgestones existing U.S. operations, Bridgestone/Firestone moved its headquarters from Akron to Nashville in 1992.

We offer many warranties to protect a driver's investment in new tires with Bridgestone. A summary of one such warranty, and what coverage it offers, is below.

The following warranty is for tires sold as replacements only. All limited warranties are limited to original purchaser on originally installed vehicle. They do not apply to tires sold as original equipment on new vehicles or select replacement tires. Certain limitations and restrictions apply. See your authorized Bridgestone retailer, or the full Tire Maintenance, Safety and Warranty Manual for details.


U.S. & Canada – Original proof of purchase required to take advantage of the Buy & Try, 90--Day Guarantee. Applies only to the purchase of a set of four or more tires. Tires must be returned to the original dealer within 90-DAYs of purchase. Buy & Try, 90--Day Guarantee does not apply to tires supplied as original equipment on new vehicles. Does not cover damage due to road hazard, collision or other specified types of damage.