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18" 8.5 and 9.5 tyre size advice needed
- patrickbateman
- Newbie
- Posts: 45
- Joined: Sun Dec 10, 2017 3:39 am
18" 8.5 and 9.5 tyre size advice needed
No answers in the "wheels" section so thought I might as well ask here before giving up,
So I bought the 3SDMS 0.05's and now about to order some tyres for them,
E86 z4c 3.0si
5x120
WIDTH: 8.5" FRONT ET35 offset
WIDTH 9.5" REAR ET40 offset
Goodyear Asymmetric 3 235/40/18 front
Goodyear Asymmetric 3 265/35/18 rear
Is this the perfect size for these wheels please?
Will I encounter any rubbing issues?
Cheers for any advice offered!
So I bought the 3SDMS 0.05's and now about to order some tyres for them,
E86 z4c 3.0si
5x120
WIDTH: 8.5" FRONT ET35 offset
WIDTH 9.5" REAR ET40 offset
Goodyear Asymmetric 3 235/40/18 front
Goodyear Asymmetric 3 265/35/18 rear
Is this the perfect size for these wheels please?
Will I encounter any rubbing issues?
Cheers for any advice offered!
- Phoenixboy
- Senior Member
- Posts: 2117
- Joined: Fri Nov 11, 2016 9:07 pm
- Location: english riviera
18" 8.5 and 9.5 tyre size advice needed
A bit quiet on the forum at the moment
But someone will be along soon to help you out
MrWilks is your man.
But someone will be along soon to help you out
MrWilks is your man.
E89 s drive 30i manual/gone
space grey
Carbon interior trim
19" Veeman FS 25`s
cruise control
m sport seats
stubby
led halo bulbs
z4 forum sticker, for added power.
OEM wind deflector
Gone, E85 Ruby Black.
space grey
Carbon interior trim
19" Veeman FS 25`s
cruise control
m sport seats
stubby
led halo bulbs
z4 forum sticker, for added power.
OEM wind deflector
Gone, E85 Ruby Black.
- mr wilks
- Legend
- Posts: 21897
- Joined: Wed Jul 04, 2012 10:02 pm
- Location: Lancashire
18" 8.5 and 9.5 tyre size advice needed
Stock ride height no probs at all op
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
- paulc_bkk
- Member
- Posts: 299
- Joined: Tue Nov 07, 2017 10:48 am
- Location: Thailand
18" 8.5 and 9.5 tyre size advice needed
Iām running BBS CH
19x8.5 ET35 with 235/35/19
19x9.5 ET40 with 265/30/19
Toyo non-runflats (I forget the exact model)
I guess this translates to the wheel and tyre specs you are considering at 18ā - so hopefully my wheel/tyre spec gives you an idea of general fitment
I think I couldāve gotten away with a 275 on the rear, but thereās not much space for a wider tyre at the front
Standard non-sport suspension, not lowered (yet)
19x8.5 ET35 with 235/35/19
19x9.5 ET40 with 265/30/19
Toyo non-runflats (I forget the exact model)
I guess this translates to the wheel and tyre specs you are considering at 18ā - so hopefully my wheel/tyre spec gives you an idea of general fitment
I think I couldāve gotten away with a 275 on the rear, but thereās not much space for a wider tyre at the front
Standard non-sport suspension, not lowered (yet)
- mr wilks
- Legend
- Posts: 21897
- Joined: Wed Jul 04, 2012 10:02 pm
- Location: Lancashire
18" 8.5 and 9.5 tyre size advice needed
Ive known Si coupes have contact on front with 235 35 19 on 8.5s et 35 . Yours i know is a roadster but do you ever have any rub on front liner when having a spirited drive ? as in into bends with suspension under compression & wheel turned ?paulc_bkk wrote: āSun Feb 18, 2018 1:26 pmIām running BBS CH
19x8.5 ET35 with 235/35/19
19x9.5 ET40 with 265/30/19
Toyo non-runflats (I forget the exact model)
I guess this translates to the wheel and tyre specs you are considering at 18ā - so hopefully my wheel/tyre spec gives you an idea of general fitment
I think I couldāve gotten away with a 275 on the rear, but thereās not much space for a wider tyre at the front
Standard non-sport suspension, not lowered (yet)
CE9D909E-4DA6-4F68-B656-5EBB6FB9098B.png
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
- paulc_bkk
- Member
- Posts: 299
- Joined: Tue Nov 07, 2017 10:48 am
- Location: Thailand
18" 8.5 and 9.5 tyre size advice needed
I can say Iāve not experienced that yet.....which is not to say that it hasnāt already happened or wouldnāt eventually (not really had the wheels off since they were installed).
My car is pretty low mileage (just over 30,000 miles) so I am suggesting that my setup is a fair representation of most cars, (nor that itās superior in any way).
I have seen that the gaps at the front donāt have a lot of clearance when stationary/unladen, and it isnāt hard to imagine worn/soft suspension allowing enough travel to make contact when under compression.
Also, I only just noticed that the OP has a Z4C and can appreciate that not all is equal between the coupe and the roadster, so please donāt take my earlier post as gospel.
My car is pretty low mileage (just over 30,000 miles) so I am suggesting that my setup is a fair representation of most cars, (nor that itās superior in any way).
I have seen that the gaps at the front donāt have a lot of clearance when stationary/unladen, and it isnāt hard to imagine worn/soft suspension allowing enough travel to make contact when under compression.
Also, I only just noticed that the OP has a Z4C and can appreciate that not all is equal between the coupe and the roadster, so please donāt take my earlier post as gospel.
- mr wilks
- Legend
- Posts: 21897
- Joined: Wed Jul 04, 2012 10:02 pm
- Location: Lancashire
18" 8.5 and 9.5 tyre size advice needed
Also without being rude the weight of driver believe or not can make a difference when the numbers are on the tolerance limit there is a local to me forum member who's a big guy 6ft5ish & a frame to match . He had his car ( 3.0Si E85 Oe springs ) into garage reporting a grating noise at front , mechanic couldn't get it to make any noise so i did a passenger ride with him & i could hear the slight chaff only noticeable when spirited on compression at drivers side . We swapped places & i drove then the noise transferred to passenger side he was on 235 35 19 8.5 fronts et35 . Problem now totally gone now he's on 224spaulc_bkk wrote: āSun Feb 18, 2018 6:27 pm
My car is pretty low mileage (just over 30,000 miles) so I am suggesting that my setup is a fair representation of most cars, (nor that itās superior in any way).
I have seen that the gaps at the front donāt have a lot of clearance when stationary/unladen, and it isnāt hard to imagine worn/soft suspension allowing enough travel to make contact when under compression.
Also, I only just noticed that the OP has a Z4C and can appreciate that not all is equal between the coupe and the roadster, so please donāt take my earlier post as gospel.
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
- paulc_bkk
- Member
- Posts: 299
- Joined: Tue Nov 07, 2017 10:48 am
- Location: Thailand
18" 8.5 and 9.5 tyre size advice needed
True! Skinny blokes ftw
Also noted a typo in my earlier post - meant to say my car is NOT necessarily a fair representation of other cars on the forum (not figured out yet how to edit posts from my phone)
Also noted a typo in my earlier post - meant to say my car is NOT necessarily a fair representation of other cars on the forum (not figured out yet how to edit posts from my phone)
- patrickbateman
- Newbie
- Posts: 45
- Joined: Sun Dec 10, 2017 3:39 am
18" 8.5 and 9.5 tyre size advice needed
Well I've ordered tonight,
Goodyear Asymmetric 3 235/40/18 front
Goodyear Asymmetric 3 265/35/18 rear
Heres hoping they fit ok,
Thanks to Mr Wilks and everyone else that has helped me out with advice on this, really appreciate it,
I have dyscalculia so working out these sizes is nigh on impossible for me to do on my own, so genuinely thank you for putting up with all my questions,
Goodyear Asymmetric 3 235/40/18 front
Goodyear Asymmetric 3 265/35/18 rear
Heres hoping they fit ok,
Thanks to Mr Wilks and everyone else that has helped me out with advice on this, really appreciate it,
I have dyscalculia so working out these sizes is nigh on impossible for me to do on my own, so genuinely thank you for putting up with all my questions,