Advan-Style Gloss Black 5-Spoke Polished-Lip Forged Wheels
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1993 TVR S4C Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting TVR S4C wheels? This page gives the 1993 TVR S4C bolt pattern (5x114.3), centre bore, factory rim size and the offset range for aftermarket and forged TVR S4C rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1993 TVR S4C uses a 5x114.3 bolt pattern with a 68.1 mm centre bore. For aftermarket wheels, 15x7.5J ET30 sits flush.
Forged wheels for the 1993 TVR S4C — drilled 5x114.3 with a 68.1 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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TVR S4C (1993) wheel fitment guide: 5x114.3 bolt pattern, 68.1mm center bore, factory 15x7J ET35 wheels. Flush and aggressive forged wheel fitment specs from ANKUSI.
Bolt Pattern5x114.3
Center Bore68.1mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year1993
Category5-Lug Performance / Tuner
Data check: the bolt pattern and center bore on this page have not yet been confirmed by a second independent source. Measure your hub or ask us before ordering. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | 15x7.5J at ET30 offset |
Forged Wheel Designs for the TVR S4C
Every design below is forged to order, so it can be machined to the TVR S4C's 5x114.3 bolt pattern and 68.1 mm center bore, with the width and offset calculated for your setup.
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Vossen HF-7-Style Silver Mesh Forged Wheels
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How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
Most of the engineering value in a forged wheel over a cast one shows up in rotational mass, not outright strength — both can meet the same load rating, but the forged piece gets there lighter. On a sedan platform tuned for everyday balance, that weight saving is felt directly in steering response and ride quality.
The TVR S4C ships from the factory on a 5x114.3 bolt pattern with a 68.1mm center bore and a 15x7J ET35 wheel. Our flush reference for the TVR S4C is 15x7.5J ET30.; our maximum aggressive reference is 16x8J ET25. — beyond that, expect clearance issues against the fender liner without further modification.
TVR S4C OE Wheel Specs
The TVR S4C ships from the factory on 5x114.3 bolt pattern wheels with a 68.1mm center bore. The stock wheel size is 15x7J ET35, offering a balanced ride that suits most owners without any rubbing or clearance concerns.
Why the factory spec works for most owners:
- Balances ride comfort with steering response and highway efficiency.
- Wide tire and wheel availability at the factory diameter keeps replacement costs low.
- Lower unsprung weight than larger aftermarket wheels helps ride quality and acceleration.
- Guaranteed clearance against brake calipers and suspension components.
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the TVR S4C (1993) we drill the 5x114.3 pattern and cut the centre bore to 68.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset & Backspacing Reference
Backspacing is calculated as: wheel width (in) / 2 + offset (mm) / 25.4 + 0.5.
- OE 15x7J ET35: backspacing ≈ 5.38"
- Flush 15x7.5J ET30: backspacing ≈ 5.43"
- Max 16x8J ET25: backspacing ≈ 5.48"
Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your TVR S4C.
Vehicles With the Same Hub as the TVR S4C (5x114.3, 68.1 mm Bore)
In our database, 77 other vehicle entries from 5 makes use exactly the same 5x114.3 bolt pattern and 68.1 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x114.3 is used by 20.0% of the vehicle pages in our English fitment guide (1,300 of 6,503); 6.0% of those also use a 68.1 mm center bore.
Hub-Centric Rings for a 68.1 mm Center Bore
A wheel with a center bore larger than 68.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 70.1 mm | 70.1 → 68.1 mm |
| 70.5 mm | 70.5 → 68.1 mm |
| 71.6 mm | 71.6 → 68.1 mm |
| 72.6 mm | 72.6 → 68.1 mm |
| 73.1 mm | 73.1 → 68.1 mm |
ANKUSI forged wheels are bored to exactly 68.1 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the TVR S4C use?
The 1993 TVR S4C uses a 5x114.3 bolt pattern.
How many lug bolts does the TVR S4C use?
The TVR S4C uses a 5-lug bolt pattern (5x114.3), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the TVR S4C?
The TVR S4C's center bore is 68.1mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What does a flush wheel fitment look like on the TVR S4C?
For a flush look with minimal to no rubbing, we recommend 15x7.5J at ET30 offset as a starting point on a stock or mildly lowered TVR S4C.
Do I need wheel spacers for my TVR S4C?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my TVR S4C?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 5.43" of backspacing.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my TVR S4C?
The TVR S4C runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Sources and Last Update
Data checked against: avtoreference.com, tirewheelguide.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
Bolt pattern and center bore on this page come from published fitment references and are still awaiting a second independent check. Last reviewed 2026-09-18. Spotted an error? Email info@ankusi.com and we will verify and correct it.