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Built for the Track, Ready for the Street
The Toyo Proxes Sport R Tire in 315/30ZR18 98W XL is an extreme performance summer tire engineered for drivers who want race-level grip without giving up daily usability. TOY178300 carries a 200 AA A UTQG treadwear rating and meets the 7/32 inch tread depth specification required for competitive racing classes, making it a strong fit for autocross, track days, and grassroots motorsport events like NASA trials.
Key Features
- Extreme performance summer compound tuned for maximum dry grip and durability
- 200 AA A UTQG treadwear rating meets competitive racing class tread depth requirements
- Extra Load (XL) construction with a W speed rating (168 mph) and 98 load index
- 315/30ZR18 size with reinforced sidewall for improved cornering stability
- Optimized tread compound designed to resist block deformation under hard cornering loads
Specifications
| Detail | Value |
|---|---|
| Part Number | TOY178300 |
| Tire Size | 315/30ZR18 |
| Load/Speed Rating | 98W |
| Load Range | XL (Extra Load) |
| UTQG Treadwear | 200 AA A |
| Speed Rating | W (up to 168 mph) |
| Brand | Toyo Tires |
| UPC | 4981910010555 |
What's Included
- One (1) Toyo Proxes Sport R Tire, size 315/30ZR18 98W XL
About Toyo Tires
Toyo Tire Corporation has been engineering high performance tires since 1945, building a reputation for tires that hold up in both street and competitive motorsport environments. The Proxes Sport R line was developed specifically for racers who need a DOT tire that still performs at the limit, combining a race-focused compound with the tread depth needed to satisfy competition class rules.
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FAQ
What is the TOY178300?The TOY178300 is a Toyo Proxes Sport R extreme performance summer tire in size 315/30ZR18 with a 98W load and speed rating and Extra Load (XL) construction, designed for track and street use.
Is the Toyo Proxes Sport R street legal?Yes, the Proxes Sport R is a DOT-approved tire, so it is legal for street use while still meeting the tread depth specification required for many competitive racing classes.
What is the UTQG treadwear rating on this tire?This tire carries a 200 AA A UTQG rating, reflecting a performance-oriented compound with strong dry traction ratings.
What speed rating does the 315/30ZR18 98W XL have?It carries a W speed rating, rated for sustained speeds up to 168 mph under proper inflation and load conditions.
Is this tire Extra Load (XL) rated?Yes, this size is built with Extra Load (XL) construction, giving it a higher maximum load capacity than a standard load tire of the same size.
What vehicles commonly run a 315/30ZR18 tire?This wide, low-profile size is common on the rear axle of high performance sports cars and track-prepped vehicles running staggered fitments.
Can I use the Proxes Sport R for autocross or track days?Yes, its 200 AA A treadwear rating and 7/32 inch tread depth were engineered to satisfy tread depth requirements for many grassroots motorsport and track day organizations.
How many tires come in this listing?This listing includes one (1) individual tire. Order multiples if you need a pair or a full set.
Install Instructions
- Confirm the tire size, load rating, and speed rating match your vehicle manufacturer's specifications or your intended fitment.
- Have the tire professionally mounted and balanced on an appropriately sized wheel within the approved rim width range.
- Set cold tire pressure according to your vehicle's recommended specification, not exceeding the tire's maximum pressure rating.
- Perform a break-in period of moderate driving for the first 100 miles before pushing the tire to its performance limits.
- Inspect tread depth and pressure regularly, especially before track or competitive use.
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