roadtrip

Seems very strange, might be worth seeing if you can find someone who's familiar with fitting rear coilovers so they can take a look as I'm really not the best person to ask. If it helps, I'm very pleased with mine so hopefully you'll think it's worth the effort once you've got it sorted.

Here's a photo of my HSD HR (which I think is the old name for the MonoPro) coilovers when they were fitted by Jez at Horsham Developments if it helps: I think the ride height was higher than standard at this point and they were then adjusted to give a drop of about 23mm which is perfect for me. I think they will go a bit lower still but not by much. How low are you trying to go?

I don't know if this is still the case but I bought some HSD HRs about a year ago and the extended adjusters for the rear dampers didn't fit. I spoke to Driftworks and they insisted they should fit but even Jez at Horsham Developments agreed that they didn't and would have to be re-drilled to make them fit. I decided to leave it but if you get some that fit then I'd love to see what the difference is.

As I see it you've got four options: 1. Assume your tyre fitter is correct and the tyres are okay to use despite how they might look. Do nothing. 2. Buy some 18" OEM Rays from ZMANALEX, other forum member or eBay. Put your Michelin tyres on them and sell the Jade-Rs without tyres. 3. Investigate what size the Jade-Rs are as KyleR suggested and buy some more appropriately sized tyres. Sell the Michelins to a forum member. 4. Buy another set of wheels with tyres making sure you know they're suitable. Sell the Jade-Rs with tyres. As you have already forked out for expensive tyres and want something that just works without affecting handling then I would say that option 2 is the best option for you. ZMANALEX is a well respected trader on here and normally has OEM Rays and other great wheels in stock, see his thread here: MORE WHEELS AND TYRES. You'll find that most aftermarket wheels for the Zed are wider than the standard OEM ones so your current tyres won't fit them which is why I suggested the Rays. If you really want something different then go with option 3 or 4, there are plenty of people on here who can help you given the right information, you'll just need to do a bit of investigation into what you have or want you want.

The OP was asking about a wider 18" setup and not 19" wheels and was referring to the standard rolling radius. No offsets were mentioned but if they're very low offset and the car is lowered then a bit of stretch might be appropriate in which case the standard 18" tyre sizes may be the best option. Of course there's nothing wrong with changing the rolling radius completely if that's the intention and speedo accuracy isn't a concern, as long as the ratio between front and rear sizes stay much the same.

The standard 18" sizes are 225/45 front (26.0" diameter) and 245/45 rear (26.7" diameter) so 40 profile is definitely what you want if you're going wider. 255/40 is 26.0" but would probably be a bit too wide for your 8.5" front rims so I'd stick with 245/40 if you can.

I would have thought something like 245/40 front and 275/40 rear would be a good place to start.

Here's a post on another forum that explains an easy way to measure your offset: How To: Measure OFFSET on your Rims For tyres I would think 245/35 (maybe 235/35) on the front and 275/35 on the rear but if your rear offset really is 0 or 10 then you may be better off with a slightly narrower tyre to prevent rubbing depending on how low you are and how much camber you're running. I don't think you're going to want spacers on the rear but I would say anything between 10 and 25mm on the front, again depending on camber and ride height.

What about Capri, Probe, Cougar? Certainly the Capri was the best but I'm not sure where I stand on the Probe and Cougar as they were both .

Why's that then? I thought as long as it was done properly then powder coating was fine and generally considered more hard wearing, have I got that wrong?

You'd ideally want 20mm spacers on the front, none needed for the rear. The front tyres might also need changing to 245/35 instead of 245/40 that the 370Z uses although I'm not sure if the original sizes will cause you problems or not. Wheel nuts are also different as they use a flat seat instead of the original taper seat. I've considered them myself as they're decent and light wheels for a good price even taking into account the above.

Myself and I'm sure others are running 10" rears, +20 offset with standard camber and they don't poke at all. I'm thinking that once the tyres are on, it's off the jack and resting on the ground they'll be okay, either that or the barrels have been changed and the offset isn't +20 anymore. My fronts are 9" with +20 offset and they have similar flushness to the rears, if I was you I'd tape some wood or plastic spacers (like these: Plastic Window Glass Glazing Spacers Packers) to the hub to mock-up some spacer widths to see what you need to clear the Brembos. If it takes more than 5mm then you might want to consider some small spacers on the rear to balance up the look.

Yes, you're supposed to reset it every time you change the tyres or pressures. It's in the manual but it was a bit convoluted and even after seven years I still had to look it up each time.

I'm quite a fan of the F14 and CF10, I posted a picture of the super deep concave ones front and rear in the Multi-Spoke Wheels thread a while back on a GT86. Think they look great in purple too, not sure I'd be brave enough on my road car though...

From what I've read the FK453 are in improvement on the older FK452 in pretty much every respect so I would go for those given the choice. The Kumho KU39 are also a similar price and have been rated well in some tests so might also be worth a look.

The Falken Ziex ZE912 aren't popular on Zeds, however a lot of people go for the FK452 which is a good tyre for the price.

Those are the standard tyre sizes which makes things a little easier. In an ideal world you'd want to replace the rears with what you've already got on the front but like I said I think you'll be lucky to find them. The closest they do now would be the Hankook Ventus V12 evo K110 which are also available in the front size should you need to change those later. Having said that you might be better off changing all four tyres now as there's probably better tyres out there for the money and you might be able to sell the fronts on eBay. A lot of the mid-range popular tyres on here are supposedly being discontinued such as the T1-R (replaced by T1 Sport), Falken FK452 (replaced by Azenis FK453), Vredestein Ultrac Sessanta (replaced by Ultrac Vorti), Kumho Ecsta SPT KU31 (replaced by Ecsta LE Sport KU39), etc. Whatever you get make sure they also do the same tyre in the front size! Your decision may come down to how many miles you intend to do, if track days are involved, how hard you drive and/or if you intend to replace the wheels including tyres sooner rather than later. If you hang around of this forum long enough you may find a need to change the wheels when previously you were happy with them.

They are actually made by Hankook who are a good mid-price tyre brand much like Falken, Kumho, Toyo, etc. I'm not sure the K104 is actually available anymore and I think the Toyo T1-R is being phased out in some sizes as well in favour of the T1 Sport. If it was me I'd look to see what's on the front and try and match that. What tyres do you have on the front in terms of brand/model, size and tread depth?

Hopefully not a repost. Incredible speed on a very old banked track near Barcelona, skip to 4:15 for the real action: I know they're both talented guys but still, they must be very brave or very stupid.

I had mine changed by Ross at Japex, see An Introduction from Japex. He won't fit any old rubbish but is happy for you to supply your own parts if they're new, good quality and from a forum trader or other reputable source. He stocks EBC pads so I don't see he'd have a problem with yours.

BMW and some of the tyre fitting chains will tell you that non-runflat can't or won't fit for all sorts of reasons. I can only speak from experience but I can honestly say that neither myself or my brother have ever had TPMS issues having swapped out runflats for OEM size non-runflats six times on three cars over the last eight years and many, many miles all on OEM wheels. We've both been warned of flats when expected and no false alarms. MINI R50 - Pirelli 17", Yokohama 17" & Hankook winter 16" BMW E81 - Falken 18" BMW E92 - Kumho 19" & Kumho winter 18"

My brother fitted a set of Kumho KU31 to the 19" rims on his E92 and has been pretty pleased with them, if you want a cheaper option.

+1. I had my winter tyres done there last year and was very pleased. I recently had a puncture repaired at a place in Hemel Hempstead and they damaged my rim, wish I'd made the extra effort to go back to Blackboots now.

A bit more concave anybody? Forgestar F14 Super Deep

Sounds just like hyper silver, looks great on a darker car. So tempting for that price.