About This Mazda RX-7 GXL 1987 Build
We love featuring real builds from real owners. This Mazda RX-7 GXL 1987 sits on a set of 18×9 / 18×10-inch Cosmis Racing XT-005R wheels, and the result speaks for itself.
The owner chose Cosmis Racing for a reason. This brand delivers serious quality and a design language that turns heads at every car meet. We see hundreds of Mazda RX-7 GXL builds come through WheelFront every month, but this one stands out. The combination of the exterior with the Cosmis Racing XT-005R creates a look that balances aggression with elegance.
Fitment Breakdown: Cosmis Racing XT-005R on the Mazda RX-7 GXL 1987
I walked around this FC RX-7 at the meet, and the setup immediately grabbed my eyes. The owner squeezed 18x9 up front and 18x10 out back, which is bold for this chassis. This staggered width changes the entire character of the car.
The +25 offset in the front puts the face right where it needs to be. It keeps the wheel tucked just enough to clear the stock fender liners while looking flush. You get that aggressive stance without needing massive spacers.
The +20 offset on the 18x10 rear wheels fills those arches perfectly. I checked the clearance, and the deep lips on the XT-005R design look incredible here. That extra width adds real meat to the rear end.
We see plenty of wheels hit the calipers on these old Mazdas, but these Cosmis wheels clear them easily. You won't struggle with brake interference or rotor clearance. The hub bore matches up nicely for a clean, vibration-free fit.
The coilovers make this setup possible by pulling the tires away from the shock bodies. Without that dialed-in suspension, you would definitely rub on the inner frame rails. I suggest you keep your alignment specs tight to avoid any fender contact.
You might find a tiny bit of rub at full steering lock if you run a meaty tire. Just roll those front fenders slightly if you want to lower it further. It is a small price to pay for this much presence.
The six-spoke design of the XT-005R looks stiff and purposeful. It complements the boxy, eighties-era lines of the FC perfectly. I love how the barrel depth draws your eyes straight to the center caps.
What We Recommend for Mazda RX-7 GXL 1987 Owners
If you want to replicate this, do not go wider than 10 inches in the rear. Anything more will require serious body work or cutting. Stick to the 18-inch diameter if you want that modern, track-ready look.
We suggest keeping your offsets between +20 and +30 for the best balance. Anything lower pushes the wheels too far out, which wrecks your scrub radius. You want the wheels to sit under the car, not outside of it.
I always recommend a staggered setup for these rear-wheel-drive platforms. It provides better turn-in response while keeping the rear end glued to the tarmac. A square setup is fine for pure drifting, but staggered drives better on the street.
Don't be afraid to run a slight stretch on the tire sidewalls. It helps with clearance and gives the car a sharper aesthetic. Just don't go overboard, or you will lose all your grip in the corners.
Always budget for a professional fender roll before you bolt these on. You do not want to destroy your tires on the first big bump you hit. Taking your time here saves you a fortune in repairs later.
Avoid cheap spacers if you can help it. If you need a small nudge for clearance, spend the extra cash on high-quality hub-centric units. Safety should always come before the look.
Style and Build Analysis
The Black finish on these wheels provides a sharp, menacing contrast against the factory paint. It gives the RX-7 a raw, industrial vibe that suits the rotary engine perfectly. Light catches the edges of the spokes, making the car look fast even when parked.
This design pulls the whole build together by anchoring the car to the ground. The XT-005R has enough geometry to keep things interesting without looking too busy. It balances the angular bodywork of the FC chassis with a modern, aggressive flare.
We see a lot of JDM builds that go for flashy colors, but this black-on-body look is timeless. It feels like a genuine street machine rather than a show queen. The visual weight sits low and centered, giving the car a hunkered-down look.
The 18-inch wheels fill the wheel wells way better than the stock 15s or 16s ever could. You lose that awkward gap that makes older sports cars look dated. The proportions feel factory-plus, like Mazda should have built it this way from day one.
Compare this to other builds we have featured, and you will see the difference. Many people overdo the stance, but this one remains functional. It commands respect without screaming for attention in a fake way.
Why We Love This Build
I stopped dead in my tracks when I saw this RX-7 roll into the lot. The way the Black Cosmis wheels fill the arches makes the car look like a predator. Every single line on the body works with the offset to create a stance that is nothing short of perfect.
The car sits with a purpose that you rarely see on vintage platforms. It reminds me why we fall in love with these rotaries in the first place. This build is raw, honest, and undeniably cool to look at under the sun.
When you see the light hit the barrel of that XT-005R, you realize this is the only wheel this car will ever need. It defines the character of the build. Get yourself a set and start driving.
Full Specs Breakdown
Here is exactly what this owner is running. We break down every detail so you can replicate this build or use it as a starting point for your own setup.
- Car Make & Model: Mazda RX-7 GXL 1987
- Vehicle Color:
- Wheel Brand & Model: Cosmis Racing XT-005R
- Wheel Size: 18×9 / 18×10
- Offset: 25 / 20
- Wheel Finish: Black
- Tires: Federal SS595 225/35 24.2″x8.9″ / 235/35 24.5″x9.3″
- Suspension: Coilovers
Before You Buy: Fitment Checklist
We talk to Mazda RX-7 GXL owners every day. These are the questions we hear most before they pull the trigger on new wheels.
Will 18×9 / 18×10-inch wheels fit my Mazda RX-7 GXL? Yes, but fitment depends on width, offset, and tire size working together. A wrong offset means rubbing. A wrong tire size means poor handling. Always verify all three.
Do I need to modify my fenders? That depends on your offset and suspension. A conservative offset with stock ride height usually fits without modification. Go aggressive and you may need to roll or pull your fenders.
Can I daily-drive this setup? Absolutely. Thousands of Mazda RX-7 GXL owners run 18×9 / 18×10-inch wheels every day. The key is choosing the right tire with enough sidewall to absorb road imperfections.
