If you want different wheels to those listed below, you need pcd converting wheel-spacers like Hubcentric Wheel Adaptors. as 4x100pcd is already relatively common.
What you need is simple wheel spacers in 4x100pcd, centre bore 56.6 to make the offset a little more common. These spacers would fit Vauxhall Corsa, Astra F&G, Tigra, Vectra + OPEL Ascona and are therefore pretty easy to come by and quite cheap. example of cheap spacers
Lotus AWI 5-Spoke
Front
Rear
S1 5 Spoke OEM Wheels
S1 5 Spoke OEM Wheels
OEM S1 wheels.
Lotus Part Numbers:
Front: A111G0004F
Rear: A111G0005F
5.5J x 15
Size
7.0J x 16
ET14
Offset
ET10
95.25
PCD
95.25
?
Center Bore
?
7.10kg
Weight
8.80kg
185/55R15 (can be used with 195/50R15)
Tyre size
205/50ZR16 (can be used with 225/45ZR16)
Price
Not available anymore !!!
Web
[ Click for external link]
Lotus OZ 6-Spokes (111s, JPS, Type '49')
Front
Rear
S1 6 spoke OEM
OEM S1 wheels.
111s are silver. JPS and Type '49' are gold
Lotus Part Numbers:
Front: A111G0013F (111s), A111G0029F (JPS, Type 49)
Rear: A111G0012F (111s), A111G0031F (JPS, Type 49)
5.5J x 15
Size
7.5J x 16
ET14
Offset
ET10
95.25
PCD
95.25
?
Center Bore
?
6.95kg
Weight
9.40kg
185/55R15(Ex factory) 195/50R15(Alternative fitment such as Neova LTS)
Tyre size
225/45ZR16
Price
£1200 approx.
Web
[ Click for external link]
Lotus Rimstock 12-Spoke
Front
Rear
S1 12 Spoke OEM Wheel
OEM S1 wheels.
Lotus Part Numbers:
Front: A111G6040F
Rear: A111G6041F
5.5J x 15
Size
7.0J x 16
ET14
Offset
ET10
95.25
PCD
95.25
?
Center Bore
?
7.56kg
Weight
8.62kg
185/55 R15 (Factory fit) (can be used with 195/50 R15)
Tyre size
205/50 R16 (Factory fit) (can be used with 225/45 R16)
Price
About £1200
Web
[ Click for external link]
Lotus Victory (Sport160)
Front
Rear
S1 160 OEM Wheel
OEM S1 wheels.
Lotus Part Numbers:
Front: A111G6032S (Grey), A111G6030S (Silver)
Rear: A111G6033S (Grey), A111G6031S (Silver)
6.0J x 15
Size
8.0J x 16
ET10
Offset
ET10
95.25
PCD
95.25
?
Center Bore
?
8.32kg
Weight
10.0kg
195/50R15
Tyre size
225/45ZR16
Price
complete set GBP 1240 (B&C)
Web
[ Click for external link]
S1 Exige
Lotus OEM
Front
Rear
OEM
Lotus Part Numbers:
Front:?
Rear:?
7J x 16
Size
8.5J x 17
ET7
Offset
ET5
95.25
PCD
95.25
?
Center Bore
?
~8.50kg
Weight
11.20kg
195/50 R16
Tyre size
225/45 R17
Price
complete set inc VAT ???
Web
[ Click for external link]
340R
Lotus OEM Technomagnesium (UK)
Front
Rear
Technomagnesio only UK cars was offerd these as replacement for the rimstock
Lotus Part Numbers:
Front:?
Rear:?
6JJ x 15
Size
8JJ x 16
?
Offset
?
95.25
PCD
95.25
?
Center Bore
?
4.77kg
Weight
5.82kg
?
Tyre size
?
Price
2000
Web
[ Click for external link]
Lotus OEM Rimstock
Front
Rear
Rimstock Alloy (outside uk std) replacement delivery wheels when magwheels where in production