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Nice, what width wheels do you have.
Good to see someone maximising grip rather than just getting big wheels.
Front wheels are 17x7.5 rims with 215/40 tyres,(wheel dim 604mm) and 17x9 rims with 245/35 rear (wheel dim 604mm). Bilstein shocks with Eibach springs on all wheels (20mm lowering).
Last edited by Portoquesa; Jul 18, 2021 at 06:51 AM.
Nice to see those fit and are the correct diameter too! Just a shame that that tyre is the only brand available in that size.
Hankook Ventus V12, Starmaxx Ultrasport ST760, and Toyo Proxes R1R (sold out) make/made them as I know
Yes, nice to have the same dim all around (604mm) I think, and with 7,5 in the front and 9 rear the tiire fit/wall look more or less the same all around.
Last edited by Portoquesa; Jul 20, 2021 at 07:25 AM.
ET35 and ET45 (with camber shims and positive camber at rear wheels). Normal position (positive camber) Adding a 3mm spacer at the bottom of the wheel result in neutral camber. 3mm spacer The 9 rim with ET45 are not outside the arch.
Due to camber shims on my car I did a minor mod inside to make sure they went clear. Not sure if that is mandatory with cars without camber shims.
Last edited by Portoquesa; Jul 20, 2021 at 02:41 PM.
Did you have positive camber at the rear?? I have never seen that on a Sierra, except for very high ride height which yours doesnt have. Normally the camber shims are fitted to reduce negative camber.
Did you have positive camber at the rear?? I have never seen that on a Sierra, except for very high ride height which yours doesnt have. Normally the camber shims are fitted to reduce negative camber.
Sorry, something wrong with my tools, Got a different answer with this: Measuring 2mm negative camber. What is the recommended camber for optimal grip?
Last edited by Portoquesa; Jul 20, 2021 at 06:04 PM.
Most of the time -1.5 degrees is said to be optimal for both 2wd and 4x4. But I think less, maybe -1 degree, might be better for a 2wd. IIRC the manual "How to prepare the Sierra for motorsport' mentioned the settings they used on the 3dr for different rallies. I think in the end they started using less camber on the rear as it probably helps traction in a straight line.
