I tried to search, eh - inconclusive.

Anyone happen to know if an 18" wheel will fit over the rear brakes of a V8S?

 

Actually guess I didn't look hard enough...this def implies they will not fit
https://www.jaguarforums.com/forum/f...-150296/page2/

 

Actually, you raised a question no one has asked about just the rears. While it's clear the OEM 18" Velas will not fit over the front super performance brakes, I'd bet they will likely clear the rear brakes, which are considerably smaller.

I have a set you could try, if you find yourself in the metro DC area. It would only take a few minutes to jack it up and test it in my garage.

 

I would be extremely surprised if you couldn't get 18's on the rear.

 

You two always were my favorites here...

Foosh - I may just take you up on that in a couple weeks, the Jag is currently out getting a little work done I can't imagine you're more than 2 hours from me.

If they fit, I'm def moving to an 18" wheel and tire setup for drag racing. The 19's I run now put overall diameter at 27.8" vs OEM of 27" vs. an 18" setup at 26.6" and this damn car needs all the mechanical advantage possible to get it's fat *** moving in the first 60'!

Jay

 

Jay, I'm about 15 minutes south of Annapolis, MD. Just let me know. No need to bring anything but your car. I have everything we need to do a quick swap.

 

Well, I decided to roll the dice on a set of 18" forgestar wheels...got a great deal on a set of 4.

So yeah, 18" wheels will NOT fit over the F-type V8S or R model rear brakes! Not unless you're willing to grind off random bits of your calipers.

Any V6 owners want a set of 18's...cheap!?

 

Put up couple pics, I'm running 19" and was thinking about 18" to get a bit fatter tire.... will they take 295's on them?

 

If they don't fit on the V8, they won't fit on any F-Type with the Super Performance Brakes (V6 or V8). Perhaps only guaranteed to fit on the V6 Base.

 

I didn't realize this before but the rear brake rotors on the V8 are 376mm, that's friggin enormous for rear brakes... (fronts being 380mm)

Sorry man.

 

+1. That's the same size as on the V6S with the Super Performance Brakes package.

 

18s for a fatter tire? I don't follow.

It's not the tire size not letting them fit...they physically won't fit over the rear brakes.

 

18's will in fact fit on Grumpy's car (18's were standard for the base 6) Unless he is going with an aftermarket wheel, wider tires won't fit on an 18" OEM rim. He could probably get by with an extra 10mm width on his current 19's. Best bet would be to go with 20" OEM wheels for 30mm (305) more in back and 20mm in front (265).

 

For my XJ Supercharged with premium brakes, I wanted to install an aftermarket set of Rohana 20" and ran into the problem in the rear only of a ever-so-slight touch of the caliper to the inside of the wheel spoke. It all depends on the wheels style and dims. You can't simply ask "will 18" fit or clear," it will specifically not only depend from brand to brand but wheel style to style. Are the spoke pattern concave? Thick spoke, thin spoke. etc... You never know until you test fit, there's no set of rules to go by. It's just about the geometry of the wheel build.

You san solve slight touching two ways:

Trace where it touches and dremel down a hair off the caliper exactly where it rubs (what we did).

Get appropriate centric spacers with the correct bore and 5x108 pattern. Note that the hub studs on Jag are very short and you may end up needing new (ET) lug nuts with the extended threaded lip to catch enough thread to get enough turns to be safe. Tie something heavy to a piece of thread and hold it next to your tire and measure from string to tire edge to see what size spacer you may need (in mm) so you get this right the first time. Remember, if you want to go smaller, the issue usually isn't really the the diameter is too small for the brakes, it's that the width of the 18" is usually narrower than say a 20" and you need to space it out to the edge of the fender so the brakes can clear. Again, the issue is almost always the distance the wheel is from the brake as far as the width, not the diameter of the rim / caliper height. You need to determine this first by identifying exactly where the caliper hits and whether the issue is indeed width or height. Racing wheels are usually short but always very wide. Stock 18"s off the shelf are rarely say 10.5-11.5" wide. Our stock 20" are 10.5" wide in the back. One would need to get the 18" to the fender edge. Offset bears another variable to all this that I won't even get into.

Now I'm talking 19"/20". Not sure if 18" does indeed present a caliper height issue. What I think is that 19" may be a safe, headache free option for you in oem.

 

Agreed. I was assuming he was swapping for OEM wheels. All the OEM wheels for the F-Type will fit his car.

Not quite. You'd have to use ~3" inch spacers to move the wheel out far enough to avoid interference with the brake calipers if they don't fit inside the wheel. The real issue as you noted correctly at the start is that the 18" wheels are generally narrower than the 19s or 20's and you can't properly fit the wider tires that he wants to use.

 

I'm not so sure "all 18" oem wheels will fit on cars with performance brakes". Remember, 18" wheels aren't offered on any car in the entire Jag line for a car with performance brakes. In fact I don't recall even a 19". Only 20"s unless I am mistaken. When building out a new F-Type, I'm not even sure if you add the brake upgrade on a base car, if the wheel choices then exclude the 19" and then default to only the 20" styles. Just because Jag offers smaller wheels on base cars, doesn't mean they fit the big brakes.

If a 18/19 oem has been test fitted and known to work, then lets make that knowledge public.

I live in Cali so I have no use for snow tires but I'm sure some East Coast members can chime in to say for sure what oem cheapies will definitely fit over performance brakes. Let's not assume anything.

 

I routinely run a 19" oem style wheel on back with drag radials for the track. No issues. My main goal here was to save some weight and use a shorter tire.

 

All "19 OEM wheels fit the Super Performance Brakes (standard brakes on the R). 19s were originally fitted with the supers on my car). 18" are standard on all brakes options offered with the base. Only one OEM "20 wheel will fit the ceramic brakes.

 

Ok so all 19" are fine on super brakes. Good to know.

The OP is asking about oem 18". This may be a different story.

 

[QUOTE=polarisnavyxj;1479414]Ok so all 19" are fine on super brakes. Good to know.

The OP is asking about oem 18". I believe the OP has a V6 base. The standard wheels for that car are 18" and super perf brakes are not available on that model. Therefore, all OEM wheels for any F-Type will fit.