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Discussion Starter · #1 ·
I've had some issues with my car over the 8 months I've owned it. Nothing serious, but the car spent quite a lot of time at the dealer.

As a goodwill gesture, JLR offered to give me winter tyres and fitting. I said I'd prefer to put these on other rims - and they didn't have an issue with this.

I bought a set of 4 black Jaguar Helix 22" wheels off eBay, and had 2 of them refinished. I bought 4 TPMS sensors off eBay too - and today took the whole lot up to the dealer. They had already ordered in the tyres for me.

I was there for a while, and was then visited by the SVR Specialist tech, who advised the wheels don't fit.
Despite them being an identical size at the front, same offset, PDC etc... the 6 pot Brembo brakes are too big!
The SVR wheels have the spokes sculpted away from the brakes. The Helix have thicker spokes, and they are straight across rather than arching away.

Using some washers to experiment, we established that it needs approx 10-11mm to clear the brakes. A set of 15mm spacers are required. Putting an extra 15mm onto the studs would mean that there is not a lot left for the nut to grip, so it has to be spacers with studs on them.
In theory, these 16mm ones from Eibach should work - but I'm still waiting for the tech to confirm.
https://www.eibachshop.co.uk/eibach-prospacer-kit-pair-of-spacers-20mm-per-spacer-system-4-s90420022_p31222620.htm
I've deliberately linked to the 20mm ones, as the 16mm ones don't have a photo!

The real question is, has anyone run spacers before?
Are there any negative effects? I imagine the SVR has been set up in a way to make it handle perfectly - so interfering with that could reduce the handling.
The wheels won't protrude from the arches with 16mm - so that's not a worry. The SVR rears are an inch bigger than the Helix. The tech suggested that put spacers on all 4 wheels - and maybe slightly bigger on the rear (maybe 20-25mm) to balance that out.

I asked for a quote for the official SVR wheels whilst there.
Black 22"... front £973 and rear £1009 each EX VAT!
That's £4756.80 for all 4 inc VAT!!!
 

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You'll probably want spacers on the rear to mimic the position of the (wider) rear SVR rims? So long as you don't go daft - this isn't really a problem.

On the front - adding a spacer increases the scrub radius. With zero scrub the wheel would rotate perfectly around the centre of the tread when you turn the steering wheel. If you push the wheel outward with a spacer, it no longer rotates around the centre of the tread - the point of rotation is further towards the inner edge of the tyre.

So what?

This also means that an external force acting on your tyre - like hitting a ridge in the road - tries to rotate the tyre around and therefore pulls at your steering. You can have a similar effect if braking or accelerating hard and one wheel finds more grip - it tugs at the steering.

So in general you don't want to do it.

BUT.....

What is the offset of an SVR front compared to a Helix? The SVR wheels may sit slightly further out as std.

It is likely the 19" and 20" wheels will have slightly different offsets to the 22" Helix too - the steering is not so sensitive that a few mm will make it unbearable. (Edit -nope - all ET45).

Also - it is difficult to predict how much impact it will have. I had a 944S2 and fitted 15mm spacers on the rear, but stuck with only 6mm shims on the front as I was paranoid about the above. I could detect ZERO change to the steering response.
 

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Actually a quick search reveals sites with diagrams that explain it better than I did...

clik
 

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I had 15mm spacers on my XFR both front and rear with no issues - no negative impact on handling or tyre wear. Of course the SVR might behave differently but I say give it a go!
 

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Discussion Starter · #5 ·
Thanks for the detailed explanation and the link - very informative.

The offset on the SVR wheel and Helix are both the same.

The way I see it, I have 3 options.

1. Get the dealer to take the tyres off the wheels. Sell the wheels, and get them to order the tyres to go on my current SVR wheels. Swap them back and forth every 6 months.

2. Take the wheels / tyres away, and sell them. Be one of the thousands of people who don't bother with winter tyres.

3. Fit the spacers and see how they are. I'm never likely to be driving as hard in winter as in summer anyway... and most of my mileage is either in traffic to and forth work, or dual carriageway. My countryside blasts generally take place on nice summers days.

I think the article above is written from a track perspective, where you'd probably notice minor handling changes. Not so sure my daily driving would suffer. My real concern would be to the wheel bearings - given that I've already had a new set fitted at 2000 miles!
 

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Always best to go in eyes-open, but yeah - go ferrit. 😊
 

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Discussion Starter · #9 ·
I haven't really done any fast driving, but so far it seems the same.

The only thing I have noticed is that the front wheels don't 'skip' as much when turning really slowly.
Don't know if this is down to the tyre compound gripping better or the 32mm wider stance?!

I don't think they skipped as much in summer... it now it's always wet and cold!
 

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p3eps said:
I haven't really done any fast driving, but so far it seems the same.

The only thing I have noticed is that the front wheels don't 'skip' as much when turning really slowly.
Don't know if this is down to the tyre compound gripping better or the 32mm wider stance?!

I don't think they skipped as much in summer... it now it's always wet and cold!
I would say its the tyres, skipping was always mentioned when the F-Pace first arrived and was always an issue i the cold weather, when the weather warmed up the skipping stopped.

Glad you seem to have found a solution to your issues.

Great result.
 

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Discussion Starter · #13 ·
Thanks for the link - a good explanation there.
I had a diluted version from the SVR tech when he was fitting them!
 

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It had been mild so I delayed putting winter tyres on for a few weeks. Last week ABS kicked in on summer tyres when braking moderately hard on a cold, damp road. I was doing less than 30 mph but it was 3 degrees C and it took me by surprise. Put the winter tyres on next day.
 

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9.5j front and back?

With the combination of width and offset changes, The outer face of the wheel will sit approx 11mm further out at the front and about 2mm further in on the rear, but that should be OK if you are happy with that visually(?) (you could fit some 15ish mm spacers on the rear if not).

What is not known is whether the spokes will clear the callipers - as per the original post. Not sure anyone will know unless they have tried them…..
 
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