Skip to main content
Free Shipping Best Price Guarantee 100+ Certified Installers 30-Day Easy Returns
+1-916-290-1970
Set your location for local pricing & delivery estimates.
Tire Ryder
Free Shipping
Best Price Guarantee
+1-916-290-1970

Your cart

RADAR DIMAX AS-8 255/55R18 109W XL tread pattern

Tire only. Wheel shown for display — sold separately.

RADAR 3.8 (205 reviews)

RADAR DIMAX AS-8 255/55R18 109W XL

All Season
Selected size 255/55R18 109W XL
Per tire
$149.33
was $189.29
21% OFF
Set of 4 — what you pay
$597.32
Free shipping 30-day returns Best price guarantee

Ships in 1 business day Arrives in 2–5 business days

As low as $49.78/mo or 0% APR

Learn more

Add installation at checkout — 100+ certified shops nationwide

About this tire

Why drivers choose the RADAR DIMAX AS-8

The RADAR DIMAX AS-8 — 255/55R18 109W XL

At a glance — 255/55R18 109W XL

  • Speed Rating W
  • Load Index 109
See full technical specifications

Key features

RADAR DIMAX AS-8

Performance ratings

Performance ratings for this tire are coming soon.

Spec sheet

Technical specifications for RADAR DIMAX AS-8 255/55R18 109W XL

Exact specifications for this variant. View specs across all sizes →

Inflation Pressure 50
Load Capacity 2271
Load Index 109
Load Range XL
Max Speed MPH 168
Mileage Warranty 60000
Sidewall Blackwall
Speed Rating W
UTQG 600AA
Wet Traction A
Pick your fit

Or shop a different size of the RADAR DIMAX AS-8

Click any size to view fitment and pricing. Check your driver door jamb for the OEM size.

16-inch wheels

10 sizes
Sold out 215/65R16 98V $148.46 Sold out 205/65R16 $142.63 215/60R16 95V $151.15 235/65R16 103H $164.50 Sold out 225/60R16 102V XL $161.99 225/65R16 $166.86 225/70R16 $165.96 215/70R16 104V XL $161.58 235/60R16 100V $157.21 225/55R16 95V $147.00

17-inch wheels

15 sizes
Sold out 215/50R17 95Y XL $179.08 Sold out 215/65R17 $157.21 215/45R17 91W XL $139.71 215/60R17 $151.38 Sold out 235/65R17 $174.71 Sold out 245/65R17 111H XL $144.95 255/65R17 110H $193.66 235/60R17 $173.25 245/45ZR17 99W XL $161.58 Sold out 225/45R17 94W XL $107.04 Sold out 225/65R17 106V XL $165.96 235/45R17 97W XL $154.29 265/65R17 $202.41 225/60R17 103V XL $163.04 Sold out 245/40R17 95Y XL $161.58

18-inch wheels

15 sizes
235/50R18 101V XL $168.87 Sold out 255/60ZR18 112W XL $195.12 Sold out 225/40ZR18 $149.92 Sold out 225/60R18 104W XL $177.62 225/55R18 102V XL $167.42 245/60R18 $186.37 235/55R18 104V XL $176.16 Sold out 245/45R18 100W XL $124.54 255/65R18 $202.41 Sold out 275/65R18 116H $219.90 Sold out 235/65R18 110W XL $187.83 Sold out 265/60R18 114V XL $138.23 Sold out 235/60R18 107V XL $182.00 Sold out 245/40ZR18 97W XL $160.13 Sold out 225/45R18 95W XL $154.29

19-inch wheels

20 sizes
Sold out 285/40R19 103W $219.90 255/55ZR19 111W XL $202.41 255/50ZR19 $203.87 245/45R19 102W XL $187.83 Sold out 235/55R19 105V XL $193.66 Sold out 235/50ZR19 $196.58 Sold out 275/55R19 111W $219.90 Sold out 255/60R19 113V XL $165.36 245/55R19 107V $196.58 235/35R19 91Y XL $161.58 265/30R19 93Y XL $176.16 Sold out 255/40ZR19 100W XL $187.83 235/45ZR19 99W XL $156.60 265/50ZR19 110W XL $202.41 Sold out 255/45ZR19 $202.41 Sold out 245/35ZR19 93Y XL $163.04 225/55R19 103V XL $187.83 275/35R19 100W $198.03 Sold out 245/40R19 98W $139.12 Sold out 275/30ZR19 96Y $147.87

20-inch wheels

16 sizes
Sold out 255/40ZR20 101W XL $192.20 295/40R20 110Y XL $222.82 Sold out 245/40ZR20 99W $176.16 Sold out 235/55ZR20 $202.41 Sold out 245/45R20 103W XL $134.75 Sold out 275/60R20 $222.82 Sold out 275/55ZR20 $216.99 Sold out 255/50R20 109W $205.32 Sold out 245/50R20 $190.74 Sold out 255/45ZR20 104W XL $196.58 Sold out 265/45ZR20 108W $165.36 255/55ZR20 110W XL $212.61 Sold out 285/50ZR20 116W XL $193.07 275/35R20 102W XL $198.03 Sold out 245/35R20 95W XL $167.42 Sold out 275/45ZR20 110W XL $203.87

22-inch wheels

9 sizes
Sold out 285/45ZR22 114W XL $233.03 295/25ZR22 97Y XL $218.45 305/45R22 118V XL $241.77 265/40R22 106W XL $218.45 245/30R22 92W XL $161.58 285/40R22 110V XL $237.40 Sold out 265/35R22 102V XL $196.58 305/40ZR22 $224.28 235/30R22 90Y XL $154.29

24-inch wheels

3 sizes
Sold out 285/40R24 112V XL $254.90 Sold out 295/35R24 110V XL $197.44 Sold out 305/35R24 112V XL $238.86

26-inch wheels

2 sizes
295/30ZR26 107W XL $247.61 Sold out 305/30R26 109W XL $249.06

Looking for the full lineup? See all sizes of the RADAR DIMAX AS-8 or shop by vehicle.

Verified reviews

What drivers are saying about the RADAR DIMAX AS-8

Based on 205 verified customer reviews.

3.8

Based on 205 verified reviews

  • 5 ★
    0
  • 4 ★
    0
  • 3 ★
    64
  • 2 ★
    113
  • 1 ★
    28
  • Aman Ullah Verified buyer ·
    Jun 17, 2024

    I recently purchased the RADAR DIMAX AS 8 275/65R18 116H tires from TireRyder.com and I am extremely happy with my purchase. The tires are of excellent quality and provide great performance on the road. I would recommend TireRyder.com for their competitive prices and fast shipping.

  • Aman Ullah Verified buyer ·
    Jun 17, 2024

    The RADAR DIMAX AS 8 225/65R17 106V XL tires exceeded my expectations. Not only are they affordable, but they also offer great traction and handling. I feel safe and confident driving on these tires, even in challenging weather conditions. I will definitely be a returning customer to TireRyder.com for all my tire needs.

  • Aman Ullah Verified buyer ·
    Jun 16, 2024

    The RADAR DIMAX AS 8 275/65R18 116H tires are a good choice for those looking for a reliable and durable option. The tires perform well on both dry and wet roads, providing a smooth driving experience. Overall, I am satisfied with my purchase from TireRyder.com.

  • Aman Ullah Verified buyer ·
    Jun 16, 2024

    Good quality tires for the price. The Radar Dimax AS 8 tires perform well in various weather conditions and are durable. However, I have noticed a slight increase in road noise compared to my previous tires.

  • Aman Ullah Verified buyer ·
    Jun 15, 2024

    The RADAR DIMAX AS 8 295/40R20 110Y XL tires I ordered from TireRyder.com exceeded my expectations. They provide a smooth and comfortable ride, and the treadwear is impressive. I would recommend these tires to anyone in need of a reliable and durable option.

  • Aman Ullah Verified buyer ·
    Jun 15, 2024

    I couldn't be happier with my purchase of the RADAR DIMAX AS 8 245/45R19 102W XL tires from TireRyder.com. These tires are excellent in terms of performance and value for money. I highly recommend them to anyone in need of new tires.

  • Aman Ullah Verified buyer ·
    Jun 14, 2024

    I am extremely impressed with the quality of the RADAR DIMAX AS 8 tires I bought from TireRyder.com. These tires provide excellent traction and stability, making my driving experience much safer and smoother. I highly recommend TireRyder.com for their great prices and fast shipping.

  • Aman Ullah Verified buyer ·
    Jun 13, 2024

    I am extremely satisfied with my purchase of the RADAR DIMAX AS 8 265/45ZR20 108W tires from TireRyder.com. The tires are excellent in terms of durability and performance, providing a comfortable and quiet ride. I would highly recommend these tires to anyone in need of a reliable and high

  • Aman Ullah Verified buyer ·
    Jun 13, 2024

    I recently bought the RADAR DIMAX AS 8 265/30R19 93Y XL tires from TireRyder.com and I am very satisfied with my purchase. The tires have a good grip on the road, even in wet conditions, and they are durable. I am impressed with the overall quality of these tires and would definitely buy them again.

  • Aman Ullah Verified buyer ·
    Jun 13, 2024

    The RADAR DIMAX AS 8 255/65R17 110H tires I purchased from TireRyder.com have exceeded my expectations. They provide excellent traction and handling, even in wet conditions. I highly recommend these tires for anyone looking for a reliable and durable option.

Customer Q&A

Questions about the RADAR DIMAX AS-8 255/55R18 109W XL

Shipping & install

Shipping & installation for the RADAR DIMAX AS-8

Free shipping

Every order ships free to the contiguous 48 states. Most arrive in 2–5 business days.

100+ Certified installers

Add installation at checkout — we'll route the tires to a certified shop near you.

30-day returns

Unmounted tires can be returned for a full refund within 30 days of delivery.

0% APR financing

Spread cost over 3, 6, or 12 months through Affirm — no hidden fees, soft credit pull.

Shipping details Tap to read
  • Free shipping throughout the United States.
  • Fast shipping by FedEx and UPS.
  • Orders above $800 require signature on delivery.
  • Sales tax applied for orders within California.
  • A valid tracking number is emailed once your order is dispatched.
  • Currently US-only — please contact us for international inquiries.
  • Orders placed before 1 PM PST ship the same day.
  • Express Next-Day, 2nd-Day, and 3rd-Day options are available for an additional fee — please contact us before ordering.
  • Default carrier method is Ground Shipment.
Read full shipping policy
30-day worry-free returns & cancellations Tap to read
  • Cancellations are accepted only before the order is dispatched. Contact customer support by phone or email to cancel.
  • We accept returns within 30 days after the order is shipped.
  • Buyer pays the return shipping cost.
  • 100% refund if the item is unused and undamaged by the purchaser.
  • 24/7 assistance if a delivered item is not as described or arrives damaged — please contact us for help.
  • Please provide your vehicle's year, make, and model so we can confirm fitment when needed.
  • If an item arrives damaged in transit, please send clear photos of the damage so we can process a replacement.
Read full return policy