The 2007 Saturn Sky arrived as a sharp-edged two-seat roadster from GM’s Kappa era, aimed at drivers who wanted compact rear-wheel-drive proportions and a distinctly modern American sports-car feel. Its low stance and crisp bodywork make wheel-and-tire presentation especially important on this car. The 2007 Saturn Sky uses a 245/45R18 radial tire, giving the page a straightforward fitment story centered less on size hunting and more on selecting the right tire within that size. Available choices stay in a blackwall performance-oriented theme from BFGoodrich and Nitto. For most owners, the key is balancing road use, wheel compatibility, and the kind of handling character expected from a modern roadster.
Which Tire Size Is Right for The 2007 Saturn Sky
The 2007 Saturn Sky uses one primary tire size: 245/45R18 on an 18-inch rim. That fitment stays consistent across the covered sub-models, so the main decision is not between multiple factory sizes, but between the available radial tire options in this size, along with their brand, tire series, and performance-oriented product characteristics.
A 245/45R18 tire uses a 245-millimeter section width, a 45-series aspect ratio, radial construction, and an 18-inch rim diameter. On the 2007 Saturn Sky, that modern metric radial format suits the car’s contemporary roadster layout and keeps the fitment centered on a low-profile radial design rather than vintage sizing conventions. Available choices in this size come from BFGoodrich and Nitto, with blackwall sidewalls and tire series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. The practical next step is comparing wheel width compatibility and the type of street use expected from the car.
Tire fitment for the 2007 Saturn Sky is straightforward across the covered sub-models. Both the Base and Red Line use the same 245/45R18 radial size, so the focus shifts from identifying a different factory size to choosing the right tire within that shared fitment.
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2007 Saturn Sky Base
The 2007 Saturn Sky Base uses the same 245/45R18 radial fitment as the other covered sub-model. That makes tire selection more about choosing among the available blackwall radial options and confirming that the wheel setup on the car still matches the intended 18-inch fitment.
The 2007 Saturn Sky Red Line also uses the 245/45R18 radial size. Tire choice comes down to selecting the right performance-oriented option in that size and checking wheel width, suspension condition, and overall clearance if the car has been modified from its original setup.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2007 Saturn Sky Tires for Sale
Available 245/45R18 choices center on blackwall radial performance tires from BFGoodrich and Nitto. The product grid gives the buyer room to compare series, rim-width compatibility, weight, and load figures within the shared 18-inch Sky fitment.
These FAQs focus on what matters most for a 2007 Saturn Sky owner: the 245/45R18 fitment, 18-inch wheel compatibility, available radial tire choices, product differences, and the checks worth making before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2007 Saturn Sky?
The 2007 Saturn Sky uses a 245/45R18 tire size. That fitment applies to both the Base and Red Line sub-models covered here, and it is a radial tire on an 18-inch rim rather than a vintage bias-ply or older alphanumeric size.
That single-size fitment simplifies the search, but it does not remove the need to confirm the actual wheel setup on the car. A Sky with replacement wheels, suspension changes, or nonstandard offsets may need extra clearance checks even when the tire size itself matches the original 245/45R18 specification.
What size rim does a 2007 Saturn Sky use?
The 2007 Saturn Sky uses an 18-inch rim diameter with its 245/45R18 tire size. Available tires in this fitment are built for 18-inch wheels, and the product range in this size includes rim-width compatibility that generally falls within the 7.5- to 9-inch range.
Rim diameter is only the first check. Wheel width matters too, especially on a low-profile radial like 245/45R18, so it helps to verify the wheel’s stamped or measured width before choosing a tire. That becomes even more important if the car has aftermarket wheels or a changed suspension setup.
Do all 2007 Saturn Sky sub-models use the same tire size?
Yes. The covered 2007 Saturn Sky sub-models use the same 245/45R18 radial tire size. Both the Base and Red Line share this fitment, so there is no split here between one sub-model using a different primary diameter or alternate tire sizing format.
That shared fitment means the buying decision is mostly about tire type and product details rather than identifying a different stock size for each trim. Owners should still inspect the car itself, since wheel changes, alignment issues, or lowered suspension can affect how any 245/45R18 tire sits and clears.
Choosing the Right Tire
What should I consider when choosing a 245/45R18 tire for a 2007 Saturn Sky?
Start with the correct 245/45R18 size and confirm that the tire matches the car’s 18-inch wheel setup. From there, compare rim-width compatibility, radial construction details, product weight, and load figures where they are shown, since these factors help separate one performance-oriented tire from another.
The Sky is a compact roadster, so the choice often comes down to how the car is actually used. A mainly fair-weather street car may lead one direction, while a more aggressively driven car may point toward another series. Wheel width and suspension condition should be checked before making the final call.
What sidewall styles are available for 2007 Saturn Sky tires?
The available 245/45R18 tires for the 2007 Saturn Sky use a blackwall sidewall style. That keeps the look consistent across the current options and suits the modern, clean presentation that many owners want on an 18-inch radial roadster tire.
Since sidewall treatment is not the main point of variation here, the more useful comparison is between tire series, brand, and wheel-width compatibility. A buyer choosing for appearance can expect a straightforward blackwall look, while a buyer choosing for road use should spend more time on the underlying tire specifications.
What brands offer tires for the 2007 Saturn Sky?
BFGoodrich and Nitto both offer 245/45R18 tires for the 2007 Saturn Sky. Within those brands, the available series include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and the Nitto NT555 G2, all in blackwall radial form.
Brand alone should not decide the purchase. It is smarter to compare the specific tire series, the wheel-width range each tire supports, and any visible differences in weight or load capacity. That approach keeps the choice tied to the car’s actual setup and the kind of driving the owner expects.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Saturn Sky?
A period-style 2007 Saturn Sky still starts with the correct 245/45R18 radial size, because this car belongs to a modern roadster era rather than a vintage bias-ply one. The available choices stay within a contemporary blackwall presentation, which fits the Sky’s original design language more naturally than a retro-looking alternative.
For an appearance-focused selection, the smartest approach is to keep the size and overall wheel presentation consistent with the car’s intended stance. After that, compare tire series and sidewall cleanliness rather than chasing a vintage look that does not match the Sky’s design era or low-profile fitment.
Does correct tire fitment matter for a 2007 Saturn Sky restoration?
Yes, correct tire fitment matters on a 2007 Saturn Sky because the car’s proportions, wheel opening shape, and low-profile stance all depend on the proper 245/45R18 sizing. Even on a newer collector car, the wrong diameter, width, or wheel combination can quickly change both the look and the driving feel.
A restoration-minded owner should treat tire size as part of the car’s overall presentation, not just a maintenance item. Keeping the fitment aligned with the 18-inch radial setup helps preserve the intended appearance, while any deviation should be checked carefully for wheel width, clearance, and visual balance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Saturn Sky?
Yes. A 2007 Saturn Sky may use the correct 245/45R18 size on paper, but aftermarket wheels, altered offsets, lowering springs, suspension changes, or brake upgrades can all change how that tire fits the car. Even small setup changes matter more on a compact roadster with low-profile tires.
Any modified Sky should be checked for steering clearance, fender clearance, and wheel-width compatibility before a new tire is installed. It also helps to inspect for uneven wear that could point to alignment or suspension issues, since those problems can affect both fitment confidence and tire life.
What should I inspect before driving a 2007 Saturn Sky on new tires?
Before driving a 2007 Saturn Sky on new tires, inspect the wheels for the correct 18-inch diameter and proper width, then confirm air pressure, lug torque, and visible clearance at the fenders and suspension. It is also worth checking alignment and looking for any rubbing marks from the previous tires.
A low-use roadster can develop age-related issues even when tread still looks acceptable, so inspect the older tires for cracking, bulges, cuts, or signs of air loss before replacement. After the new set is mounted, a short drive followed by a recheck of pressure and clearance is a sensible final step.
How should 245/45R18 tires on a collector 2007 Saturn Sky be maintained?
Collector use does not remove the need for regular tire care. A 245/45R18 tire on a 2007 Saturn Sky should be kept at appropriate pressure, inspected for tread and sidewall condition, and checked periodically for flat spotting or age-related deterioration if the car spends long periods parked.
Storage conditions matter on a low-use roadster. Keeping the car away from prolonged heat, direct sunlight, moisture, and ozone sources helps preserve tire condition, and occasional inspections can catch cracking or air loss early. A Sky that has sat for months deserves the same careful pre-drive check as any other collector vehicle.
