C7 Corvette Grand Sport buyer's guide (2017–2019): specs, the wheel record, verifying one and 2026 prices

GM’s 2017 order guide (opens in new tab) lists the Grand Sport as its own model, 1YW07 for the coupe and 1YW67 for the convertible, with RPO Z16, the Grand Sport Performance Package, on every car (an RPO, regular production option, is GM’s three-character option code). Z16 is the Z06’s bodywork (fender inserts, grille, wider rear fenders, splitter, rockers and spoiler), wheel and tire sizes and Brembos, plus Magnetic Ride Control and an electronic limited-slip differential. The dry sump (Z52, which keeps the oil in a separate tank), the performance exhaust (NPP) and a rear differential cooler are standard too.

From GM’s 2017 brochure (page 46) and GM’s price list as Corvette Blogger published it.

Against a Z06, the Grand Sport gives up the LT4’s supercharger and intercooler, 190 hp and the Z06’s hood, and keeps the Stingray Z51’s gear ratios, with a 2.73 axle on automatics where the Z06 has 2.41. It weighed 96 lb less and cost $14,000 less new. GM’s Z06 overheating coverage, N202302720, names only the Z06 (see the C7 Z06 guide).

Against a Stingray Z51, the engine is the same 460 hp LT1 with the same dry sump, limited-slip and differential cooler, because the Z51 package includes them too. The $5,000 between them in 2017 bought 3.5 inches of width, the Z06’s tires and brakes, standard Magnetic Ride and the Z06’s 30.7 mm stabilizer bars (28 mm on a Z51), for 130 lb more than a base Stingray coupe.

On track, GM files it with the Z06. The 2017 owner’s manual gives the Grand Sport and Z06 one track rule: driver only, tires at 26 psi and no more than 184 mph; a Z51 is held to 174. That’s a track limit, not a top speed. The manual’s track brake burnishing procedure, too, covers the Grand Sport alongside the Z07 and carbon-ceramic Z06s.

Hagerty wrote in February 2025 that many enthusiasts consider it “the most discerning choice” among C7s. The name goes back to GM’s 1963 race car (five built), and the 1996 Grand Sport of the C4 (1984–1996), the 2010–2013 car of the C6 (2005–2013), covered in the C6 Grand Sport guide, and the 2027 Grand Sport of the C8 (2020–present) carry it too.

From GM’s 2017 brochure (opens in new tab) (page 46) and order guides; tank, oil and wheel nuts from the owner’s manual; EPA from fueleconomy.gov, which lists the Grand Sport with the Stingray. GM’s 2018 spec sheet gives 176.9 in for the length and 18.5 gal for the tank; its order guides also give 18.5 gal. Every C7 model, year by year, is on the C7 spec page.

Wheels. Every Grand Sport rides on the same sizes; the finish was the option. Pearl Nickel (Q8W) was standard. For 2017 GM charged $495 for black (Q8X), $1,495 for machined (Q8K) or satin black with a red stripe, and $1,995 for chrome (Q8Z). Among 2019 Grand Sports, 6,035 got gloss black, 2,757 chrome, 1,357 Pearl Nickel, 721 satin black with the red stripe and 371 machined.

0–60, quarter mile and lap times

GM published no top speed for the Grand Sport; Car and Driver estimated 175 mph. At its Lightning Lap 2016, Car and Driver’s 2017 Grand Sport lapped Virginia International Raceway in 2:47.1, 1.9 seconds quicker than its C8 Stingray Z51 five years later (the C7 vs C8 guide has more).

What the Z07 adds. By the order guide: carbon-ceramic brakes (J57) with dark gray calipers, the FE7 suspension tune and Michelin Pilot Sport Cup 2 tires, for $7,995 in 2017. GM’s launch release also counted carbon-fiber aero in the Z07, but the order guide sells it separately (CFZ or CFV), and GM’s delivery bulletin 16-NA-330 says the Z07 brings no aero change on a Grand Sport. A car with both should show Z07 and CFV or CFZ among its option codes.

GM’s yearly production tables as Corvette Blogger posted them; the totals are this site’s sums and match Corvette Blogger’s run totals.

Three pedals are the rare ones: manuals 5,546, 21 percent of the run. The Z07 is rarer still, 2,028 cars, fewer than the 2,953 of the one-year C7 ZR1. For 2018 and 2019 the carbon-ceramics also came without the Z07, on 242 and 124 Grand Sports. The Heritage Package (Z15, $795) added hash marks inside and required the fender hash marks, in six colors.

• Collector Edition (Z25), 2017: 935 built (784 coupes, 151 convertibles) of 1,000 planned, at $4,995 on a 3LT: Watkins Glen Gray, Tension Blue hash marks and interior, black wheels, a numbered plaque.
• Carbon 65 Edition (Z30), 2018: 297 Grand Sports (262 coupes, 35 convertibles) of 650 cars shared with the Z06, at $15,000.
• Drivers Series, 2019: 95 coupes named for GM’s Corvette Racing drivers, Gavin (35), Magnussen (25), Milner (21) and Garcia (14), at $4,995, or $5,995 on a 3LT.

Colors. Arctic White led the run (4,850), then Watkins Glen Gray (3,743), Black (3,683) and Torch Red (3,381). Sterling Blue is the rarest, at 402.

None of GM’s order guides, spec sheets or manuals shows a mechanical change across the three years. The years differ in price, options, colors, editions and one transmission fluid.

2017. Retail production began July 11, 2016. The coupe was $65,450 and the convertible $69,450, plus $995 destination ($66,445 for the coupe, GM’s figure); the automatic was $1,725. The 2017 guide has the detail.

2018. A short year, squeezed by a plant retooling and over in January 2018: 3,081 Grand Sports, at $65,495 and $69,495 before destination. Carbon-ceramics without the Z07, the Carbon 65 and Ceramic Matrix Gray arrived. See the 2018 guide.

2019. Launch prices matched 2018’s, then rose in mid-December 2018 to $65,900 and $70,400 before the $1,095 destination, and the automatic to $1,995. Shadow Gray and Elkhart Lake Blue arrived mid-run, and automatics built after February 1, 2019 got GM’s updated transmission fluid at the factory. A Long Beach Red Grand Sport paced the Indianapolis 500. See the 2019 guide.

NHTSA files every Grand Sport as a plain Corvette, but it keeps the first 11 characters of the VIN with most complaints, and NHTSA’s own decoder reads the model from them. Sorted that way by this site on October 30, 2026, the complaints against 2017–2019 Corvettes (opens in new tab) belong mostly to one model:

One 2017 Grand Sport complaint filed under 2019 is counted with 2017. The counts are this site’s and approximate.

Grand Sports were 34 percent of 2017–2019 production and drew 72 percent of the complaints (329 of 456) and 78 percent of those tagged to wheels (305 of 393). Stingrays, on narrower wheels, ran 0.9 complaints per 1,000 built and Z06s 4.9. The 2017 Grand Sport’s 15.6 is the highest rate of any C7 model and year this site has split. (The 2017 guide counts which narratives name a model; by VIN, most that name none are Grand Sports.)

What they describe. By keyword, about 242 of the 305 mention a crack, about 130 a bent wheel and about 128 air loss. Where they say which wheel, it’s mostly a rear: 182 mention a rear, 46 a front. Fifty-eight point to the inner lip, barrel or bead, the inboard side of the rim hidden behind the spokes, and dozens say there was no impact. One 2017 daily driver had both rears cracked on the inside rim at 25,000 and 26,000 miles, with no pothole to blame. Those are failure modes, not a failure rate.

Publicity counts too. The 2017 Grand Sports drew 1 complaint in 2017 and 9 in 2018, then 87 in 2019 and 46 in 2020, when owners’ lawsuits over the wheels were in the news. The claim that the cast wheels should have been forged is an allegation, not a finding (the C7 guide has the cases).

What GM did. No recall. Its Corvette Wheels Limited Reimbursement Program (opens in new tab) paid owners of 2017–2019 Grand Sports and 2015–2019 Z06s back for cracked or bent wheels replaced within 4 years or 48,000 miles, impact damage excluded, and closed to claims on January 25, 2025. GM’s bulletin 99-08-51-007G doesn’t endorse straightening, welding or re-machining, so a cracked wheel means a new one, now at your expense. Owners in a Canadian forum thread blame the low-profile run-flats and potholes.

Steering, 2017–2018. Recall 19V086000 replaces the steering gear, whose electric assist may fail, on 2017 Corvettes built July 27, 2016 to May 4, 2017; 25V175000 does the same for 200 Corvettes, 2017s and 2018s built by June 29, 2017, that GM lists by VIN. The earliest 2017s (built to August 15, 2016) also have airbag-module recalls 16V651000 and 17V437000. No recall covers a 2019 Grand Sport, though one 2019 owner reported losing assist five times in the first 322 miles.

Automatic shudder. The eight-speed’s known fault is a shake at light throttle between 25 and 80 mph. GM’s final fix, bulletin 18-NA-355 (opens in new tab), is a once-per-car fluid exchange for automatics built through February 1, 2019: every 2017 and 2018 Grand Sport automatic and early 2019s. One owner’s new 2017 Grand Sport shuddered at about 3,500 miles, and another owner paid $624 for the exchange in March 2019. The manual gearbox’s third-gear bulletin, PIP5435A, doesn’t cover the Grand Sport’s MEL.

Ride. GM’s program 18197 reprogrammed the suspension module on certain 2017–2018 cars with FE6, the Grand Sport’s standard suspension, that might not give the softer ride intended. It ended July 31, 2020; a dealer can say whether it was done.

Smaller items. By bulletin 16-NA-363, a Grand Sport’s brake cooling ducts shipped loose for track use; they should come with the car. GM’s Special Coverage 17469, for a leaking fuel pump module flange on 2014–2017 cars it lists by VIN, may still apply to a 2017. One 2018 convertible’s owner reports the brake pedal going to the floor before a crash, a single report with no recall or bulletin behind it.

AFM lifters, crankshaft end play, the seven-speed’s shifter linkage and oil in the air box on dry-sump cars are generation-wide; the C7 guide covers each.

Treat the body as a claim and GM’s codes as the proof.

The label. The Service Parts Identification label sits under the carpet on the passenger side of the hatch or trunk (2017 manual, page 321); without one, the 2019 manual points to a barcode on the B-pillar label. Two codes prove a Grand Sport: the model, 1YW07 or 1YW67, and Z16. The others only back it up: Z52, NPP and the limited-slip are on every Z51 Stingray too, and FE6 on Z06s without Z07. Editions add their own codes: Z25 (Collector Edition), Z30 (Carbon 65) and PDA, PDJ, PDO or PDT (Drivers Series). No GM document found shows a Grand Sport’s actual label, so if Z16 is missing, have a dealer read the build record.

The VIN. The eighth character is the engine: 7 for the LT1, so a 6 means a Z06. NHTSA’s decoder reads a fifth character of V, W, X, Y, Z or 1 as a Grand Sport. The tenth is H for 2017, J for 2018, K for 2019.

The title. In a 2024 case Yahoo Autos reported, a car YouTuber paid $35,000 for a “Grand Sport” about $20,000 under market. The title had been washed, the dash and door-jamb VINs matched it, and police later took the car. A price that good is the warning.

1. The codes. 1YW07 or 1YW67 and Z16 on the label, a 7 in the VIN’s eighth place, and every advertised option (Z07, J57, Z15, MEL or M5U) on the same label.
2. All four wheels, tires off or on a balancer, inner barrels included. Ask whether any tire needs regular air, and price a new wheel before you bid.
3. Recalls. Run the VIN through NHTSA’s lookup (opens in new tab); on a 2017 or early 2018, ask for the steering gear invoice.
4. The automatic. Light throttle between 25 and 80 mph, and the 18-NA-355 receipt unless it was built after February 1, 2019.
5. The ride. A harsh ride on a 2017–2018 may mean program 18197 was never done.
6. Dry-sump oil, checked warm by the owner’s manual; a cold reading looks low and invites overfilling.
7. Track history. Tire wear, pads, the loose brake ducts, and on a J57 car the rotors, which the 2019 manual says to weigh before new pads go in.
8. Paint and cabin. Fascia edges, panel fit, and the dash on 3LT cars, which owners report delaminating.
9. A pre-purchase inspection by a shop that knows C7s, with no warning lights on the test drive.

How much is a C7 Grand Sport worth? About $55,000 for a clean, low-mile one at auction in 2026. Bring a Trailer (opens in new tab) listed 15 Grand Sports from January 1 to October 29, 2026 and sold 10, all unmodified, by this site’s count:

That’s a median $55,500 on 10 sales, May 3 to October 28. The eight titles giving a mileage had a median of 10,000 and none over 25,000: collector-grade cars, so a 60,000-mile car will bring less. Two Collector Editions sold for $53,500 and $56,359, in line with ordinary 2017s. In 2025, nine unmodified Grand Sports sold at a median $60,000.

Other measures sit higher. Hagerty in February 2025 put an excellent (#2) Grand Sport in the mid-$60,000s, 27 percent above a base C7, with automatics about 10 percent lower. classic.com’s average sale was $67,227 on February 9, 2026, and dealers listing Grand Sports there were asking about $54,000 to $75,000 in early October 2026. For comparison, C7 Z06s sold at a median $78,500 on Bring a Trailer from April to September 2026 (the Z06 guide). Those are records of what sold, not a forecast.

Tires. The factory run-flat Michelin Pilot Super Sport ZP averaged $562 front and $645 rear per tire on tiresize.com on October 30, 2026: about $2,400 a set before mounting, by this site’s arithmetic. In 2017, an owner put a set (opens in new tab) at about $2,000 installed and found no good all-season choice in these sizes; tiresize.com now lists a Michelin all-season run-flat at $402.50 and $529.50. There’s no spare.

Oil and fuel. The dry sump takes 9.8 quarts with the filter by GM’s owner’s manuals, against 7.0 for a wet-sump Stingray; GM’s spec sheets print the same capacity as 9.75. Both figures are GM’s. EPA rates the LT1 at 16 mpg city and 25 highway with the manual.

Brakes. J57 carbon-ceramic pads have no built-in wear indicators, GM’s 2017 manual notes. No rotor price was found for this guide; get a quote.

Warranty. GM’s 2017 brochure gives 3 years or 36,000 miles bumper to bumper and 5 years or 60,000 miles on the powertrain, long run out on a 2017; the newest Grand Sports were built in 2019, so assume none has factory coverage left. A car that sits through winter belongs on a battery maintainer.

Buy a Grand Sport if you want the Z06’s body, tires and brakes and don’t need the supercharger: at the 2026 Bring a Trailer medians it costs about $23,000 less than a Z06. Buy a Stingray Z51 if the wheel record worries you more than the width tempts you: same engine, dry sump and limited-slip, and 0.9 complaints per 1,000 Stingrays built against 12.5.

The pick is a 2019: the lowest Grand Sport complaint rate, no recall, and the only year an automatic could leave the plant with GM’s updated fluid. Make it a manual (2,310 were built for 2019) or an automatic built after February 1, 2019, with all four wheels checked off the car. On a budget, a 2017, the cheapest year at a $53,750 median, works with the 18-NA-355 receipt and the steering gear invoice. For the track, find a Z07 car, one of 2,028. Buy an edition for the code on its label, not the plaque.

Walk away from a Grand Sport with a tire that won’t hold air and no wheel inspection, or a label without the model code and Z16.

Get it right and you have the C7 in its best suit: 460 hp up front, the Z06’s footprint underneath and a clutch pedal if you want one, at a 2026 median about $11,000 under the 2017 coupe’s sticker. Take it to a track day, brake late on the Z06’s Brembos, and let the car ahead find out what 335-section rear tires do on the way out of a corner. That’s America’s sports car at its old trick: more speed than the money should buy. The best Corvette years guide sets it against every other generation.