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I'm not 100% because I haven't seen it actually on a car yet, but based on how my 18x9.5 +37s fit, I'm 95% certain 18x9.5 +25's would rub somewhat on the outer fender lip under hard bump without modification to the fender.
Here's an example of a 255/40/18 on an 18x9.5. Little stretched for my taste, but not too bad.
I have finally bought the Coventry Whitley wheels. Took me this long, because they didn't have them in stock at TWS.
My next question now is if anyone here has used these wheels, and if the original hub caps will fit the Coventry wheels? and if they don't, where can I get hub covers with the JAguar that fit.
I used original jag center caps when I put 17 inch Coventry whitleys on my 98 xj8
Fits fine
Thank you for your answer.
Do you know, by any chance, what the center hub hole diameter was on the Whitleys you have?
Please allow me to explain my question.
I have not received the wheels yet, (hope to get them by end of the week), but when I asked the sales rep what the hub diameter was, he told me it was 74mm.
Now, I know and have measured my Eclipse wheels, and the center hub hole is only 50mm, and the original hub covers are 58mm on the large diameter and 58 on the outside rim edge.
This is why I am asking this question here, hoping to see what the hell is going on with this, as I am very puzzled now.
I managed to fit these 20x9.5 had to remove/trim down rear bump stops and bend the brake line bracket on the front. Still rubs on inside of front wheel lining but not too woried about that.
I am so sorry, you are absolutely right, it was very rude of me not to have posted the result after I asked the question here.
Please let me make up to this fault of mine by posting the photos of the car with the wheels I chose.
Anyway, although I am not a big fan of the "pimp my ride" style, and am not too much into modifying or "visually tuning" cars, I had to go with the Coventry Whitley wheels because I could not find any Coventry Hornet wheels in stock anywhere because they were discontinued
The Hornets were nice and were a lot less pimpy my ride, and a lot more classic - (this car has a story and this is why I keep it), so they would go well with the car.
As I said, we can't modify the wheel sizes of our cars, unless its specified in the registration and title. If you change anything the cars will not pass the yearly inspection..so I had to stick with the sizes I could use.
I went with the 18x8.5. Going to 18x9 would make the tires look odd, because I can's go any wider than the 255/40ZR18 tires.
So here is the car with the new wheels, and I am keeping the original wheels to maintain the car stock, in case I need to sell it.
It looks like the 18x9.5 Whitley is a +20 offset. This is too aggressive without some fender work (i.e edge rolling/grinding) on the X308. Not sure how familiar you are with offset, but in case you aren't the more positive offset you have the further inboard the outer surface is relative to the mounting surface. The X308 comes with a lot of positive offset from the factory, so going more negative will give you more lip and a more aggressive stance, but there isn't a whole lot of room for it in the X308. For instance, during the summer I'm running 18x9.5 +40 offset Corvette Grand Sport wheels with a 3mm spacer, for an effective offset of +37. There is some room to move further outward with my setup, but only about 1/4-1/2 inch (6-12mm) before I'd start rubbing the fender lip and chance cutting the tire. So in an 18x9.5, I'd consider safe offset to be around +30, with max being about +25 and likely to rub without fender rolling/grinding. So those 18x9.5 +20s are almost certainly too aggressive. The 18x8.5 +20s however should be just about perfect, with a nice and aggressive but safe stance.
Also, a 255/40 tire is about perfect for an 8.5 wheel, but too narrow for a 9.5. With a 9.5, I consider a 265 to be about the minimum, and a 275 looks a lot better. You get quite a lot of stretch out of a 255 on a 9.5 (I tried it on my Vette wheels), and it looks kind of awful in my opinion.
hello, great answer thank you. However (based on my calculations) you have about 23mm less inner clearance. was that an issue for your ride ? did you have to do something about it ? Many thanxs
In post #8 of this string, (former?) member Rostman said he was doing 19s and specifies the offset. In another thread he states that he indeed purchased and mounted BBS RS wheels in this size with no problem. Unfortunately, virtually all of his photos got wiped along the way. Probably the Photobucket fiasco. I think that's as close as I've found to an answer to your question.
I've been poking around the forum on this subject and have decided to stay with the Asteroid, but will widen the rear wheels an inch. Then add a half inch spacers to push the rear wheels outboard. Tires will be 275/35 on the rear and the stock 245's on the front.
does the following combination work: 8Jx19, 255/35ZR19, ET15, XJR or would it be a problem because of the low offset?
The standard offset for 8J rims is 33mm.
With 255/35x19 tires you are pushing everything some F:25mm / R:15mm further out than my set-up (tolerances in tire brand not included).
I should say you are probably just ok on the rear, but the front will rub at full lock to the left / right, hitting the fender liners.
More important, the added scrub radius on the front, plus the 255 tires will probably cause some tram-lining issues.
Originally Posted by 64etype
I've been poking around the forum on this subject and have decided to stay with the Asteroid, but will widen the rear wheels an inch. Then add a half inch spacers to push the rear wheels outboard. Tires will be 275/35 on the rear and the stock 245's on the front.
If you widen the Asteroids on the rear, you will have the same staggered set-up as I have with Double fives (F:245/45R18 on 8J and R:275/40R18 on 9J).
If you add 1/2 inch spacers, you will have used up all space between the tire and the fender lip (again, different tire brands have different sizes).
By the way, the correct tire size will be 275/40, not 275/35 for the rear.
And you will have to halve the rear bump stops, or buy the narrower later XJR ones to clear the tires.
Last edited by ericjansen; 11-12-2019 at 01:28 AM.
Reason: pic added
Thanks for that photo. Is the offset/ET for the 9 inch double wide wheel the same as for the 8 inch front (33 MM)? It looks like the face of the wheel tire might be slightly more outboard than what's on my car...which is one of my objectives.
Actually 275/35 is closer to the stock size of 255/40
Originally Posted by 64etype
Tires will be 275/35 on the rear and the stock 245's on the front.
Not if the fronts are 245, which the OP mentioned in his post (and which are in my humble opinion a much better choice for a 8J rim).
A 275/40 will then have the same side wall height, where a 275/35 is thinner, and will make for a strange look.
Is the offset/ET for the 9 inch double wide wheel the same as for the 8 inch front (33 MM)?
OEM 9J rims had an offset of 35mm.
Not sure what the offset will be if you widen a 8J to a 9J, and if they can play with the offset while doing that.
Also note that, when the wheels move upwards during suspension travel, they tend to angle inwards (camber), leaving some space to the fender lip.
Your main issue to watch will be the rear fender lip, as there is rather room on the inside (suspension bump rubber excluded).
QUOTE=ericjansen;2153363]OEM 9J rims had an offset of 35mm.
Not sure what the offset will be if you widen a 8J to a 9J, and if they can play with the offset while doing that.
Also note that, when the wheels move upwards during suspension travel, they tend to angle inwards (camber), leaving some space to the fender lip.
Your main issue to watch will be the rear fender lip, as there is rather room on the inside (suspension bump rubber excluded).[/QUOTE]
Yes, 275/40 is what I'd want. The wheel modifiers simply split the rim in the middle and weld in a spacer ring of your choice. They won't attempt to correct offset, so that's where a hub spacer/adapter comes into play. Sounds like a 9.5 " wheel (1.5" rim extension) could be squeezed in if there's still space on the back side of your current tires (with modified or removed bump stops as necessary). The hub adapter would be sized to bring the outer face of the wheel/tire to where it is on your car (which looks just right). Thanks for the help with this. Now I need to find two spare Asteroid wheels (I'll store the ones currently on the car).
Hi guys,
I just found a very cheap set of 9Jx18H2 ET35 Milans from an XK8 (all wheels are 9“ wide).
The Milan wheel from the X308 was only 8,5“ wide with an offset of 33.
Do these still fit the X308?
The rear shouldn’t be a problem but what‘s about the front?
02-20-2014, 09:27 AM
