Offset for 7.0 x 15 wheels?

[Jon Ward]

Hi All,

 

A technical question, but I thought I’d try here first...

 

I need to sort out a set of wheels for Class 2 next year. I’m going to try the Team Dynamics Pro Race 1.2 (7.0 x 15) with 195/45-R15 Scudo Stunners. Do I need to specify an offset, and if so how do I calculate it? I’ve done a search, but can’t find anything here or in tech talk

 

The alternative is to get my shiny anthracites and nearly new Stunners back – you know who you are Maybe you could drop them off this evening 😬

 

Thanks in advance

 

Jon

[Englishmaninwales]

Jon

woops! just re read your question.....

 

Edited by - Englishmaninwales on 9 Nov 2010 10:13:33

[Richard Price]

Jon,

Caterham ten spokes are 6.5" ET13, but are quite outset.

 

If you were specifying 7" wheels, then you could still cope with ET13, but no more. ie ET10 or ET8 would ne better.

If the ET value was too great, say ET 18, then you could use a 5 or 6mm spacer, as long as you have long enough wheel studs.

 

I've got a bent wheel you could borrow for comparison if you like?

 

 

[Jon Ward]

Richard

 

Their website lists 7.0 x 15 e15 / 23 / 25 / 30 / 35 / 40 / 45

 

So if I understand you correctly, I need e15 and some 5mm ish spacers (?)

[Mr Locust]

Jon,

 

Full tech here

 

You could always source a reasonably priced set of 6.5j x 15" ET13 Prisoner rims locally

 

Ian

 

Green and Silver Roadsport 😬

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[Richard Price]

Jon,

ET15's will be fine on the rear, but there is a good chance you'll need a few mm of spacers on the front.

I'd get the tyres on the rims before deciding on the spacers that you need.

If you do need spacers, then you may also need longer studs. (all later hubs are supplied with longer studs)

 

 

 

[Nick Chan]

I've got a bent wheel you could borrow for comparison if you like?

 

I thought you had a full set available or have you disposed of the real bad ones apres-Landow 😬

 

The alternative is to get my shiny anthracites and nearly new Stunners back – you know who you are

 

Those will be the lightened version then - well, they haven't got much tread left

 

 

 

---

Back in a BEC! - but done alright in Class 1...

[Jon Ward]

Thanks chaps,

 

After talking to Richard earlier, I'm going to have a rethink before spending a load of money on something I might not need...

 

At least now I understand the meaning of offset

 

Br,

 

Jon