Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: VXL V6 on 01 September 2016, 17:38:53

Title: Irmscher Sportstars - Tyre sizes
Post by: VXL V6 on 01 September 2016, 17:38:53
Am I right in thinking the correct (or at least the standard size that most people stick to) tyre sizes for staggered 8J front, 9J rear 18" wheels on a -30mm lowered Omega chassis is 235/40/18 front and 245/40/18 rear?
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: Lazydocker on 01 September 2016, 17:59:55
That's what I have (although mine are both 8J IIRC)

I believe that go faster black one is on 245 front and 265 rear on 8J and 9J
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: Doctor Gollum on 01 September 2016, 18:11:45
That's what I have (although mine are both 8J IIRC)

I believe that go faster black one is on 245 front and 265 rear on 8J and 9J
That's correct re faster black one... My 8j18s had 245/40/18s fitted all round.

235/40/18s are an official alternative  :y
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: pauls on 01 September 2016, 18:55:08
Mine are 18 8j all round and running on 235 40 18
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: 106pete on 01 September 2016, 19:50:24
My wheels are 8.5 all round but use 235/40/18 on front and 265/35/18 on the rear to look a little fatter but tbh there's very little difference in them.
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: serek on 01 September 2016, 20:17:07
235/40/18 front and 265/35/18 at back
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: TheBoy on 02 September 2016, 13:08:16
Particularly with some brands of 245, you need to you need to be careful of strut/wheelarch fouling.

Even those god awful GY F1 Assym 2 in 235 need a compromise on camber to fit without rubbing.
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: Doctor Gollum on 02 September 2016, 14:02:00
Particularly with some brands of 245, you need to you need to be careful of strut/wheelarch fouling.

Even those god awful GY F1 Assym 2 in 235 need a compromise on camber to fit without rubbing.
Sorry TB, but have to disagree there...

Mine had 245/40/18 GY F1 Assym 2 which didn't rub either on standard suspension or Irmscher lowered... neither did the various brands which replaced them... :-\ Always used XL tyres too...
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: Doctor Gollum on 02 September 2016, 16:34:21
Particularly with some brands of 245, you need to you need to be careful of strut/wheelarch fouling.

Even those god awful GY F1 Assym 2 in 235 need a compromise on camber to fit without rubbing.
Sorry TB, but have to disagree there...

Mine had 245/40/18 GY F1 Assym 2 which didn't rub either on standard suspension or Irmscher lowered... neither did the various brands which replaced them... :-\ Always used XL tyres too...
In the interests of clarity, my Irmscher Stilas had an offset of ET33... Sportstars are either ET30 which shouldn't rub, or ET38 which could well rub with sidewall protection etc :-\
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: 106pete on 03 September 2016, 07:24:54
I thought side wall protection was only on the outside rim so shouldn't affect the suspension?
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: Doctor Gollum on 03 September 2016, 08:23:25
I thought side wall protection was only on the outside rim so shouldn't affect the suspension?
Depends if the tyres are directional/sided... and on the suspension components ;)
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: TheBoy on 04 September 2016, 11:07:31
Particularly with some brands of 245, you need to you need to be careful of strut/wheelarch fouling.

Even those god awful GY F1 Assym 2 in 235 need a compromise on camber to fit without rubbing.
Sorry TB, but have to disagree there...

Mine had 245/40/18 GY F1 Assym 2 which didn't rub either on standard suspension or Irmscher lowered... neither did the various brands which replaced them... :-\ Always used XL tyres too...
In the interests of clarity, my Irmscher Stilas had an offset of ET33... Sportstars are either ET30 which shouldn't rub, or ET38 which could well rub with sidewall protection etc :-\
OP specifically mentioned Sportstars :)

My ET30's rub like a bastid :(
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: TheBoy on 04 September 2016, 11:09:00
Though my point was, as I'm sure the OP wouldn't want GY F1 A2's anyway, different tyres can also affect the size that will fit nicely.
Title: Re: Irmscher Sportstars - Tyre sizes
Post by: VXL V6 on 04 September 2016, 13:33:28
Current thought is Michelin Pilot Super Sports all round at the moment.