Hi all.

On the GTi 30th edition the car comes with Michelin Pilot Super Sport Tyres at 205/40 R18 86Y the offset is ET20. Current Alloys are 18x7.5.

The issue is I have tried a million companies and no one has or can get that tyre for at least 10 weeks.

Options 1: (change tyre brand)
Dunlop sport Maxx RT
Pirelli PZero AR or ARR
Bridgestone Potenza RE050
Yokohama S.Drive



Option 2: (Change all 4 to a different size)
change all the tyres to 225/35 R18
This gives me many more options but results in a rotational difference on the speedo of +1.06% 60mph would be 60.63mph (though one site says 60km/h will be 50.94/km/h

235/35R18 is a better match at 0.1% difference but only 1 tyre is an option.

Option 3: (change alloys and tyres)
18x8 With 215/40 R18 change offset top 25 Speedo difference 60mpg is 59.24mph(other site says 60km/h is 60.8km/h) Alloy sticks out 1.3mm more



For now ignore the relevance of cost. I was going to change the alloys down the line anyway, this just might make me do it sooner.

Options for Alloys:
http://www.wheelbasealloys.com/alloy-wheels/oz-racing/superturismo-gt/grigio-corsa/18-inch
http://www.wheelbasealloys.com/alloy-wheels/oz-racing/ultraleggera/matt-black/18-inch



Specs from Wheelbase.com
Peugeot Feedback
208 GTi. 30th.
KW:155 Vin:C Year:
PCD:4x108 GVW:1900 Max Speed:230 Kerb Weight: Caliper:
NutBoltThreadType:M12x1.25 NutBoltHex:17 BoltLength:28 NutBoltTorque:95

Tyre Load Speed Norm
Press Laden
Press Rim
Size Offset Cent
Bore RunFlat Extra
Load Track Max
RimWidth
F: 205/40R18 86 Y 7.5 x 18 20 65.1 8
R: 205/40R18 86 Y 7.5 x 18 20 65.1 8


WheelSize MinOSet MaxOSet BestFitTyre(s)
7 x 17 10 25 205/45R17
7.5

205/40 R18 In stock at openeo (Potenza),
the super sport michelins in a 205 R18 are rare and maybe why you need to change,
the Pirelli and bridgestone seem the most common


http://www.oponeo.co.uk/tyre-details/bridgestone-potenza-re050a-205-40-r18-82-w-run-on-flat---fr/?origin=prodlisting&gclid=CP_2q6fwk8wCFQccGwodXwYH-A

Its an MOT fail if the tyre sits outside of the wheel arch. 75% of tyre has to be in the arch or 1/4" cant stick out.

 

Do you think my car would accept 18x8j alloys?

Looking at www.willtheyfit.com

18x8 differences are these offset will be 25 instead of the 20 currently on my car.
205/40 = 0 = 60 is 60mph this would stretch i'm guessing?
215/40 = - 1.27% = 60 is 59.24mph
225/35 = +1.06% = 60 is 60.63mph

Alloy is 11.4m closer to suspension and sticks out 1.3m more

 

How about measuring your tyre to wheel arch distance now, thats what I did to see if my 7.5J with an ET25 would still be okay. Your 30th is about 10mm wider track so you could pop round and look at mine and we try to crunch the maths that way, or on Monday I try to sheck it out for you. The rears dont matter so much as you have a arch extension already on the back ones.


dont think this last comment will help but my 7.5J compared to stock 7.0 ended up giving me 5mm wider track on each side(car is now 10mm wider track than stock)

 

Opps I missed this!

I am off tuesday, I shall take some measurements and let you know! I will measure everything that I can measure.



if 7.5j to 8j gives me 10mm wider track 215/40 tyres should be fine.

 

I am sure 215/40 will be fine on your 30th since you have wider arch. I am using 215/45R17 on my 208 GTi, and I have 12mm spacer which means my actual ET now is 8. My tyres are still inside the wheel arches.

 

My wheels are 18x7.5J though and if I upgrade my alloys to 18x8J take a 215/40 tyre. Then I am wondering if they fit and still be able to turn!

Future upgrades will be bilstein b14 kit. To drop the car another 10mm

Thanks for the help

 

You will have find similar rims to try them on to be sure. I once tried some retired WTCC rims, they're 17" 9J, don't remember their ET, something like 30-ish, they fit perfectly well on my GTi without spacers, even have a lot of extra room for my Alcon callipers, about 5mm clearance inside on full turn. Too bad they're actually 114.3x4, now just need some good machine shop to drill some holes on my wheel hubs.

But man, those retired WTCC rims from Cruize are SO STUPIDLY light, they're about half of the weight of GTi's stock wheels even with 235 tyres on. Cheap as hell as well, the shop I know got them for £20 each with some half used slick tyres on them, and I can have them for £40 each.

 

I measured my tyre to wheel arch today, its a bit of a bad figure due to camber(-2.5) but I still have 10mm on 7.5J to outer of wheel arch. My Borbet alloys are ET25(Ome is ET20)

I will say when I was 30mm lower than ome on stock 7J alloys it could touch the arches with tyre at full lock but that is also that camber was -3.5.


Its a minefield but basically from pontus, an ET18 is lowest you can go (before needing spacer). From me as a general rule you should only go +5 or -5 ET from what the stock setup was or its trouble which can take a lot of fettling to sort out. Fettling is expensive.

Whats good is reputable companies wouldnt want to sell you a wheel with a crazy offest.

 

I was thinking that an 18x8J with a 25 Offset would work for me. My Car is Offset of 20 OME and was thinking I should go to 25.

I thought the GTi Was offset 25 anyway?

 

Hi i posted it when I switch my wheels. ET20 for 208 gti. If you pop one of your wheels it will stamped on back of rim what size it is including et.

 

Ooo Im off tomorrow I shall have a look. If you like pop by on your way home.

 

GTi prestige have 7J17CH4-20nr 7 from the list


i will mount 8J-18 et 27 from ds4

 

Okay so I counted remove the wheel today because the socket I needed has gone missing. The misses has put it down somewhere but she can't remember where! So I have ordered a new one.

I did manages to take some rough measurements.

Top of the tyre to edge of outside wheel arch Front 25mm / rear 25mm

Rear Edge of tyre to suspension strut 50mm
Rear edge of tyre to inside of wheel arch 50mm

Front edge of tyre to suspension strut 50mm
Front edge of tyre to inside of wheel arch 130/140mm (I struggled to get a good measurement)

This measurement I check due to my wider track and also more aggressive camber.
Front and rear Top of tyre to outside edge of wheel arch 10mm
Front and rear Bottom of tyre to outside edge of wheel arch 5mm

 

So hopefully a higher ET will be okay as that means its closer to the inner wheel arch but still have another 0.5" to squeeze in. A forum member on here has 8J on a 208 gti cant remember who I shall find out for you seem to remember they were ET40.

 

Okay I will get looking.

One thing I didn't think/know about was the middle bore? I have no idea what it is or how what it does? I think my car is 65.1 and I found some wheels that were 73.1, ebay have some rings that do the conversion. Was for a BMW but seemed to be the measurements I needed.

 

65.1

 

Okay I took a wheel off today and then cleaned it and took some photos of the inside of the wheel.These are 18" Alloys from a GTi 30th Edition

So what do all the numbers and stuff mean?
I'm sorry for some of the photos being upside down. I have rotated them on photobucket and still they appear upside down on here.















Clean




Some brakes






Some Annoying Dirt: (gets stuck on top of the wishbone)


Some suspension:

 

Proves in your 4th photo it a 7.5j 18" et20

The rest are mould numbers such as 4. Others parts like in photo
6 are to indicate quality. If all thelse lines and threads were not there it would be 2nd.

 

Interesting that its an an Italian Speedline Alloy. Not cheap stuff!