2008 Honda Civic Si Rims: Factory Fitment & OEM Replacement Guide

Finding the right rims for a 2008 Honda Civic Si comes down to two things: matching the factory fitment exactly, and deciding whether you want genuine OEM wheels or a replica. The Si trim used a specific 17-inch setup that differs from the base Civic, so getting the numbers right matters before you buy.

This guide walks through the exact factory specs, what fits without spacers or modifications, and how to buy replacement wheels that bolt on and drive true.

2008 Honda Civic Si OEM Wheel Specs

The 2008 Civic Si — whether the FG2 coupe or the FA5 sedan — shipped from the factory with 17-inch alloy wheels. These are noticeably larger than the 15- and 16-inch wheels on lower Civic trims, which is the number one reason people mix up fitment when shopping.

Those seven numbers define a bolt-on fit. If a wheel matches the 5x114.3 bolt pattern, the +45 offset (within a few millimeters), and the 64.1 mm center bore, it drops onto your Si without spacers, hub rings, or fender work.

Why the Center Bore and Offset Matter Most

The bolt pattern is what most buyers check, but the center bore and offset are where fitment problems actually show up.

The 2008 Civic Si is a hub-centric vehicle with a 64.1 mm hub. A genuine OEM wheel bores to that exact size, so the wheel centers on the hub — not on the lug studs. Aftermarket and replica wheels are often made with a larger center bore to fit multiple cars, which means you need hub-centric rings to eliminate vibration at highway speed. Factory-correct wheels skip that step entirely.

Offset controls how far the wheel sits in or out of the fender. The factory +45 mm keeps the tire tucked properly under the arch and preserves the original suspension geometry. Drop too far below +40 and the wheel pokes out or rubs; go much higher and it tucks inward and can contact suspension components. For a daily-driven Si that you want to handle and wear tires like it did new, staying at +45 is the safe call.

OEM vs Replica Rims for the Civic Si

You have two real paths when replacing a wheel on this car.

Genuine OEM Wheels

These are the same wheels Honda installed at the factory, pulled from take-offs or unused stock. They match the finish, weight, offset, and bore exactly, so if you're replacing one damaged wheel out of a set, an OEM take-off blends in without looking mismatched. The alloy quality and load rating are what the car was engineered around.

Replica Wheels

Replicas copy the factory look at a lower price. They can work well for a full set of four, but two cautions apply: verify the center bore and offset match the factory numbers, and know that replica alloys vary in weight and casting quality. For a single-wheel replacement, replicas rarely match a factory wheel closely enough to look right next to three originals.

For most 2008 Si owners replacing a curbed or bent wheel, matching the original is the cleaner result. That's the core of what we do at OEM Wheel Shop — factory-correct replacement wheels that match your existing set.

Common Fitment Questions

Will 18-inch wheels fit a 2008 Civic Si?

Yes, 18-inch wheels physically fit if you keep the 5x114.3 bolt pattern and an offset in the +40 to +48 range, but you'll need to drop to a shorter tire sidewall (such as 215/40R18) to keep the overall diameter close to stock. Going up in diameter firms up the ride and can affect speedometer accuracy if you don't match the rolling diameter.

Do 2006–2011 Civic Si wheels interchange?

The 8th-generation Civic Si ran from 2006 through 2011 and shares the same 5x114.3 bolt pattern, 64.1 mm bore, and 12x1.5 lug spec across the run. Wheels from those years generally interchange, though the specific spoke design changed, so a set from a 2009 or 2010 Si will bolt on but may not match a 2008 design visually.

What tire size goes on the factory 17-inch rim?

The factory tire is 215/45R17. That size fills the fender correctly and keeps the rolling diameter the car was calibrated for. If you're replacing tires at the same time, staying with 215/45R17 keeps your speedometer accurate and preserves handling.

Can I run wheels from a non-Si Civic?

The bolt pattern on many base 8th-gen Civics is also 5x114.3, so they can bolt on, but base trims often came in 16-inch or 15-inch sizes with different offsets and narrower widths. You lose the Si's 17x7 stance and the tire options narrow, so it's not a recommended swap if you want the factory look and fit.

When a Civic Si Wheel Needs Replacing

Not every scuffed wheel needs to come off the car. Knowing the difference between cosmetic damage and a structural problem saves money and keeps you safe.

• Curb rash — scrapes on the outer lip are cosmetic. The wheel is still safe to drive, and light rash can often be refinished rather than replaced.
• Bent lip — if the wheel bends from a pothole, you'll usually feel a vibration or notice the tire losing air slowly. A bent wheel breaks the tire bead seal and should be replaced.
• Cracks — any crack in the barrel or spoke is a hard stop. A cracked alloy can fail without warning, and it is not a wheel to keep driving on. Replace it.
• Corrosion — pitting under the finish can prevent a tire from sealing. If a wheel won't hold air after a fresh mount, corrosion at the bead seat is often the cause.

For a single replacement, matching the exact factory wheel keeps your set uniform in weight and finish. Mismatched wheel weights across an axle can subtly affect balance and tire wear over time, which is another reason a factory-correct replacement beats a random used wheel of a different design.

Understanding the Factory Finish and Weight

The 2008 Si's 17-inch alloy came in a silver-painted finish with a machined face on some production runs. When you replace one wheel out of four, that finish is the detail that gives away a mismatch — a slightly different silver or a fully painted face next to a machined one stands out even from a distance.

Weight matters too. Factory alloys were cast to a specific weight that the suspension tuning and unsprung-mass balance were built around. Heavier replica castings can dull the responsive feel the Si is known for, especially in quick direction changes. If you value how the car drives, matching the original wheel weight is part of matching the fit.

How to Order the Right Wheel

Before you buy, confirm three things about your car:

1. Confirm the trim. Only the Si used the 17x7 wheel. If your car is a base, LX, or EX Civic, your factory size is different.
2. Count how many wheels you need. One replacement should match your existing three — go OEM. A full set of four gives you the option of OEM or a matched replica set.
3. Note the finish. The 2008 Si wheels came in a specific silver/machined finish. Matching the finish matters for a single-wheel replacement.

When you shop replacement wheels with us, every listing is verified against factory fitment data, so a wheel sold for the 2008 Civic Si carries the correct 5x114.3 pattern, +45 offset, and 64.1 mm bore. You can browse the full range of Honda replacement wheels and filter to your exact year and trim.

Installing Your Replacement Wheel

Once the correct wheel arrives, the install is straightforward, but two details protect your safety and your new rim.

First, torque the lug nuts to Honda's spec of 80 lb-ft (108 Nm) in a star pattern, not in a circle. The star sequence seats the wheel evenly against the hub and prevents warping the rotor over time. Snug all five by hand first, then torque in the crossing pattern.

Second, if you're mounting a fresh tire on the replacement wheel, have it road-force balanced. A standard spin balance handles most wheels, but road-force balancing catches subtle roundness issues that a curbed or previously bent wheel might carry, which is worth the extra step on a used OEM take-off. After 50 to 100 miles, re-check the lug torque, since new mounting surfaces can settle slightly.

Bottom Line

The 2008 Honda Civic Si uses a 17x7 wheel with a 5x114.3 bolt pattern, +45 offset, and 64.1 mm center bore, wrapped in a 215/45R17 tire. Match those numbers and the wheel bolts on and drives true. For a single damaged wheel, a genuine OEM take-off matches your set exactly; for all four, you can choose OEM or a factory-spec replica. Either way, verify the offset and bore before you buy — that's what separates a clean bolt-on from a vibration you'll be chasing at 70 mph.