What's the consensus on the best spacer size for an SVR?

One thing I learned this week is that Jaguar purposely made the wheels more recessed in order to improve aerodynamics, or so they say, but the net effect is a little too much 1970s Cadillac deville for my taste.

It looks like they need a solid inch at each corner to bring them flush, but varying reports here indicate that may cause rubbing with the rear 305s.

So what will work without requiring grinding the studs and with a decent result?

 

subscribed! Keen to see the options

 

It's not a direct spacer size comparison because I have aftermarket 10.5" wheels with a different offset and an older V8, but I have 305s that exactly line up with the top rear fender with no rubbing.

 

Ok thanks. Looking at the offsets, the rear wheels on the SVR are +54 vs +38 for the R, so the SVR rear wheels are recessed 16mm vs the R. So to get the equivalent of an R with a 10mm spacer, I'd need a 26mm spacer (or roughly 25mm since that's an available size).

The question now is whether it's safe or even possible to run a 25mm spacer (or technically adapter, I suppose). They should fit without rubbing even with the 305 rear tires, but I don't know if stock lug bolts are long enough so they can be bolted down adequately or whether they would cause any handling/safety problems once installed.

 

I agree with your math but thats assuming the rim widths are equal on the SVR and R. I think my sold factory V8 S wheels were 11 wide. Don't forget 5mm for 305 tire bulge vs 295.

​​​​​​I am running a 15mm adapter and I still had to grind about 3mm off the hub facing edges of the factory bolts so they would fit inside my particular wheel. I'm talking about the factory bolts fitting into the recesses on the back of the wheel, in between wheels' bolt holes. The spacer lugs are recessed more than flush with the outside face of the spacer with more than 10mm of factory bolt protruding. So my thought is 1" spacers would probably be safer as far as the lugs attaching the spacer to the hub because the spacer thins where it countersinks to bury its supplied lugs.

 

Correct, they are not the same width. The R (or V8S) rear wheels are 10.5” vs the SVR wheels which are 11”. That’s the reason I used 10mm in the example for the spacer size instead of 15 or even 17mm as a lot of people here use, because I think that would not be achievable in this car (as it would require a 31 or 33mm spacer), and even it was, the wheels would probably rub.

 

FYI my aftermarket wheels are 10.5" wide with a 42mm offset and a 15mm adapter.

+6mm for the wheel width
+4mm from the R's offset
-15mm for the spacer
-5mm for the 305 (don't forget the R has 295s)
​​puts me at around 10mm wider than a stock R.

This is holding my cell phone against the top center fender and 305 tire bulge. The +0.2 degree angle means the tire is that much tucked-in, about perfectly flush.


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I could swear my stock 14 V8 S tornado rims were 11s. Adjust accordingly if you determine otherwise.

 

This shows that they were 10.5”, but it could be wrong.

https://www.wheel-size.com/size/jagu...-50-s-eudm-488

 

Be careful comparing R fitment with the SVR. The rear hub components are different, possibly changing the track dimensions, and therefor the spacer calculations.

 

Unhingd is obviously right, but I think its safe to directly measure what you think you need. I doubt it will rub with the stock springs. Hey I have an unopened set of 1" spacer/adapters I bought in case I didn't like the 15mms. You can have em no charge. PM me if you want em..

 

I have a set of 17mm spacers that I used on my '14 R Coupe with a set of H&R springs. Together they rubbed with my carbon blades.
I'll see if I can use the spacers on my SVR over the weekend. Easy enough to just test fit.

Anyone with a guestimation if the H&R's from a RWD R would fit an SVR? :P

 

Good point. I have a feeling this will involve some trial and error to get it right.

 

They were actually 15mm spacers. I fitted them and they don't rub. They also fit fine with the black non-carbon ceramic SVR wheels.

 

No the springs wont work, svr is awd and heavier at the front end.

 

So 15mm all around worked on the SVR with the standard wheels? What brand spacers are they? Any pics to show how the wheels sit now? TIA!

 

There may be an issue if you have Carbon Ceramic brakes.
After I installed aftermarket wheels I no longer needed my 17mm spacers and sold them to a friend who has an SVR with Carbon Ceramic brakes. He tried to install them but said they interfered with the rotor hubs. I didn't witness the problem, so I can't really confirm the issue, but it is worth mentioning.

(I bought the spacers back from him and resold them to another owner with standard brakes)