Choosing a 305/45R17 drag radial is a meaningful decision for any street/strip build. This size is popular with high-horsepower cars because it offers substantial rear-tire width while retaining a 17-inch wheel fitment that works well for many muscle-car, street-machine, and drag-oriented applications.
Still, the size printed on the sidewall is only the beginning. Two tires can both be labeled 305/45R17 and deliver very different experiences at the starting line, on the street, and in less-than-perfect weather. Tread design, compound, construction, sidewall behavior, water evacuation, and intended use all shape the way a drag radial performs.
McCormack Racing currently offers three notable exact-size options for shoppers seeking a 305/45R17 drag radial:
Each tire is aimed at drivers who want serious traction, but they are not interchangeable. This guide breaks down the strengths, tradeoffs, and ideal use cases for each option so you can choose a drag radial that fits your vehicle, power level, driving habits, and goals.
What Does 305/45R17 Mean?
Before comparing the tires, it helps to understand the size itself.
- 305 is the nominal section width in millimeters.
- 45 is the aspect ratio, meaning the sidewall height is approximately 45 percent of the tire’s section width.
- R indicates radial construction.
- 17 is the required wheel diameter in inches.
In practical terms, a 305/45R17 is a wide rear tire with a substantial sidewall. That sidewall can be valuable in a drag-focused application because it gives the tire room to work under acceleration while still fitting a 17-inch wheel.
However, fitment should never be based on the size name alone. Actual section width, tread width, and overall diameter vary by manufacturer and model. Wheel width, wheel offset, suspension setup, fender clearance, brake clearance, vehicle weight, and power delivery all need to be considered before ordering.
A 305/45R17 drag radial can be an excellent fit for the right build, but it should be matched to the vehicle rather than chosen only for its aggressive appearance.
Quick Comparison
Tire | Best For | Primary Strength | Main Tradeoff |
Mickey Thompson ET Street S/S | Street/strip drivers wanting more balanced road manners | R2 compound, radial construction, and improved hydroplane resistance versus earlier tread layouts | Still a drag-oriented tire, not an all-season daily-driver tire |
Mickey Thompson ET Street R | Drivers prioritizing dry traction and a drag-focused contact patch | Minimal tread void and strong dry-contact emphasis | Less tread void means less margin in standing water |
Nitto NT555RII | Weekend racers seeking a D.O.T.-compliant competition drag radial with useful street versatility | High-grip compound, semi-racing construction, and circumferential grooves | Traction-focused construction still requires realistic wet-weather expectations |
Mickey Thompson ET Street S/S: The Street/Strip Middle Ground
The Mickey Thompson ET Street S/S is designed for drivers who want a true street-to-strip tire rather than a purely track-oriented rear tire. Mickey Thompson describes it as a high-performance street/strip tire with radial construction and its R2 compound.
For the 305/45R17 size, Mickey Thompson lists an approximate overall diameter of 27.9 inches, a section width of 11.9 inches, a tread width of 10.6 inches, and a recommended measuring rim width of 10 inches. The approved rim-width range is 9 to 11 inches. Those figures make it especially important to confirm wheel width before purchasing.
One of the ET Street S/S’s most useful traits is its attempt to balance dry traction with better wet-road behavior than an extremely minimal-tread tire. Mickey Thompson notes that the tread void is redistributed to improve hydroplane resistance while retaining a large amount of tread contact for dry traction. That does not turn it into a rain tire, but it is an important distinction for a vehicle that may see normal street driving between track outings.
ET Street S/S Strengths
- D.O.T. approved for street use
- Radial construction
- Proven R2 compound designed for strip traction
- Tread pattern intended to retain dry contact while improving water management
- Useful choice for drivers who want one rear tire for both street and track use
- Available in the exact 305/45R17 size
ET Street S/S Tradeoffs
The ET Street S/S is still a traction-first tire. Its compound and tread design are built for a very different purpose than a conventional summer performance tire or all-season tire. Drivers should expect faster wear, more attention to temperature and road conditions, and a narrower comfort zone in heavy rain than they would receive from a standard street tire.
It may be the strongest choice of the three for someone whose car spends meaningful time on public roads but still needs to perform at the drag strip. It is particularly appealing for a weekend street car, a mild-to-serious muscle-car build, or a driver who does not want a highly specialized tire every time the weather forecast becomes uncertain.
Mickey Thompson ET Street R: Maximum Dry-Track Focus
The Mickey Thompson ET Street R sits further toward the traction-first end of the spectrum. Mickey Thompson positions the ET Street R as a street-legal drag tire with race compounds and a minimal-tread-void design intended to create a wide contact area.
For the 305/45R17 size, Mickey Thompson lists an approximate overall diameter of 28.1 inches, a section width of 11.7 inches, a tread width of 10.5 inches, and a 10-inch measuring rim. Its approved rim-width range is broader than the S/S at 9.5 to 11.5 inches.
The dimensional differences between the ET Street R and ET Street S/S are small, but the tire’s philosophy is different. The ET Street R uses minimal tread void to prioritize contact with the pavement. For a driver who is mainly concerned with putting power down on a prepared surface, that is exactly the point.
ET Street R Strengths
- D.O.T. approved street-legal drag tire
- Minimal tread void for a broad dry contact patch
- Race-compound focus
- Radial construction
- Strong option for traction-focused street/strip or drag-racing builds
- Exact 305/45R17 fitment available through McCormack Racing
ET Street R Tradeoffs
The same minimal tread void that helps maximize dry contact can limit the tire’s ability to manage standing water. That is not a flaw in the design. It is the natural tradeoff of a tire built to prioritize traction on dry pavement and at the strip.
For that reason, the ET Street R is best suited to drivers who can be selective about weather conditions and who place a higher value on dry launch performance than frequent wet-road use. It can be a very compelling choice for a car that sees street miles, but its owner should be realistic about rain, temperature, and overall tire wear.
If your build is increasingly track-oriented or you want the more direct, dry-traction-focused option of the two Mickey Thompson tires, the ET Street R deserves serious consideration.
Nitto NT555RII: Competition Drag Radial With Street Awareness
The Nitto NT555RII is another exact 305/45R17 option, but it approaches the street/strip equation from its own angle. McCormack Racing describes the NT555RII as a D.O.T.-compliant competition drag radial designed for the weekend drag racer.
According to the product information, the NT555RII uses a high-grip compound and semi-racing construction to improve traction at the starting line. It also uses large circumferential grooves to support wet handling on the drive to and from the track.
That combination makes the Nitto especially interesting for drivers who want a competition-minded radial but still need practical road manners for a car that is not trailered everywhere. Again, “improved wet handling” should be understood in the context of a drag radial. It does not mean the NT555RII should be treated like an all-weather tire, but it does show that the design considers more than dry launch traction alone.
NT555RII Strengths
- D.O.T.-compliant competition drag radial
- High-grip compound
- Semi-racing construction
- Large circumferential grooves designed to support wet-road handling
- Designed with the weekend drag racer in mind
- Exact 305/45R17 option available
NT555RII Tradeoffs
Like the Mickey Thompson options, the NT555RII is a specialized traction tire. Buyers should not expect the same tread life, cold-weather capability, or rain confidence as they would get from a conventional high-performance street tire.
The key question is whether its blend of drag-radial traction and circumferential-groove design better matches your real driving routine. For a driver who attends test-and-tune nights, wants a serious rear tire, and still drives the vehicle to local events, the NT555RII can be an appealing middle path.
Which 305/45R17 Drag Radial Is Right for You?
There is no single “best” 305/45R17 drag radial for every vehicle. The right choice depends on how heavily you prioritize dry traction, rain tolerance, street use, and track time.
Choose the ET Street S/S if you want the most street/strip-oriented Mickey Thompson option in this comparison. Its R2 compound, radial construction, and tread design make it a strong fit for drivers who want strip traction without moving as far toward a minimal-tread configuration.
Choose the ET Street R if your highest priority is dry traction and a drag-focused contact patch. Its minimal tread void and race-compound focus make it the most direct choice for drivers who plan around dry conditions and want a more aggressive traction-first setup.
Choose the Nitto NT555RII if you want a D.O.T.-compliant competition drag radial with design elements intended to support wet-road usability. It is a particularly sensible option for the weekend racer who drives to events and wants a tire built around both launch traction and practical street travel.
Fitment, Safety, and Final Checks
A 305/45R17 drag radial is not a universal bolt-on upgrade. Before ordering, verify:
- Wheel width and the tire manufacturer’s approved rim-width range
- Rear suspension and fender clearance
- Wheel offset and backspacing
- Brake and chassis clearance
- Vehicle load requirements
- Drivetrain, transmission, and power level
- Whether the car sees rain, cold temperatures, or long highway trips
- Track rules for your class and event
It is also wise to follow each manufacturer’s instructions regarding tire pressure, usage, storage, and operating conditions. A drag radial can be incredibly rewarding when it is correctly matched to the vehicle, but it deserves the same careful fitment planning as any other performance component.
For shoppers comparing an exact 305/45R17 drag radial, McCormack Racing offers three distinct, credible options. Start with how you truly use the car, choose the balance that fits your priorities, and then confirm fitment before committing to your next rear-tire setup.