Caporegime
- Joined
- 11 Mar 2005
- Posts
- 32,222
- Location
- Leafy Cheshire
Interesting to hear that the PS4S is a lot quieter than the MPSS, currently tyre noise is my main bugbear at motorway speeds.
NEARLY 2 YEARS WAITING: New Mustang GT PP is finally mine!
- Thread starter Gibbo
- Start date
I'm glad you said this as I convinced myself it was just placebo effect of having new tyres, but today before it started raining I was thinking just how grippy they seemed, was testing (safely) doing rather sharp direction changes and they just didnt skip a beat, on the Pzeros would have been sidewards...
Well I nearly found this out the hard way, I was getting cocky in the wet/greasy roads as the car was so confident inspiring from grip on the rear axle and I took a corner a little too quick and whereas the rear axle gripped the front did not, lets just say it understeer a lot, had to gently trail brake and take some lock out of the steering to navigate the corner safely, thankfully its wide so room to run off and on the exit I could apply full power. So a clear grip difference between MPSS and PS4S in such conditions. I find MPSS superb in wet and amazing in dry, but inbetween not as strong, particular on the Mustang at least, the M3 on the other hand which has MPSS all round sticks to the road like poo to a blanket irrelevant of the conditions.
Aha, that moment you pray that you have enough run off to let the fronts re-grip before you run out of road or something gets in the way
Fronts fitted:
No stretched look or rubbing so far.
Though when I put lock on there is only a finger height gap between tyre and fender, anyone else running this low with 20 and wide rubber up front had any issues with tire catching the fender?
Also I think a 295 in the front would rub the arch liners for sure as now it practically touches on full lock, so 295 tyre would like rub.
Just hoping when carving the corners up the front wheels won't catch the fender though I think there are people running even lower than me.
No comments on handling other than the rears still seem a touch greasy nearly 100 miles later and they do not seem to switch on as easily as MPSS did.
The garage said not to worry, time of year and some tires can take a lot longer than others to fully bed in from new.
No stretched look or rubbing so far.
Though when I put lock on there is only a finger height gap between tyre and fender, anyone else running this low with 20 and wide rubber up front had any issues with tire catching the fender?
Also I think a 295 in the front would rub the arch liners for sure as now it practically touches on full lock, so 295 tyre would like rub.
Just hoping when carving the corners up the front wheels won't catch the fender though I think there are people running even lower than me.
No comments on handling other than the rears still seem a touch greasy nearly 100 miles later and they do not seem to switch on as easily as MPSS did.
The garage said not to worry, time of year and some tires can take a lot longer than others to fully bed in from new.
Interesting, mine seemed to switch on almost right away, though I had a few days of only slightly damp / more dry than not roads to play with.
I think the solution Gibbo is more power
Get some heat into them 
Maybe it's just me going crazy, but that looks maybe a touch too low. How stiff is the suspension?
Really like them buddy, they give the tyre a much chunkier look, bit like a slick and they are quite dark with no tyre black. However my autobrite tyregel does not seem to soak in, it just wipes off so that could be a downside but I was trying to apply on un-clean tyres but it normally just soaks in but on this tyre it just wipes off like the velvet wall won't let stuff soak in.
You may already know, but tyre has 'bi-compund technology' according to spiel:
"Michelin reports that the new tyre’s braking performance on both wet and dry surfaces has benefitted from the use of ‘bi-compound technology’. The outer part of the tread uses a new hybrid compound that promotes grip on dry ground while the inner part uses a new compound that contains silica and functional elastomers which allow the tyre to offer consistent grip on wet ground."
Interesting, mine seemed to switch on almost right away, though I had a few days of only slightly damp / more dry than not roads to play with.
I think the solution Gibbo is more power
Remember, AWD no skill required, you could fit ling longs and it will still grip.
I did mention using line lock and the garage (motorsport guys) were like no no no do not ever put new tyres through a serious heat cycle it does them no good, always bed new tyres in slowly to get the best results, the guy saying this used to be a mechanic / adviser for Le-mans so he knows his stuff and just suggested to give them time.
That angle always looks unflattering was same on last tyre, just camera angle, rear shot looks fine. Also I need to decrease off-set as fronts sits a touch more in than years, I currently have a 3mm spacer on the front which helps a touch, but will slip a 5mm on, just waiting for longer studs as with a 5mm spacer I can only get 6 full turns of the lug nut on the stut and an M14 bolt specifies a minimum of 7.5 full turns for proper thread engagement. So got 10mm longer studs incoming, 2mm don't sound much but it should make the necessary difference.
Plus once all cleaned up I will take some side on shots.
Remember, AWD no skill required, you could fit ling longs and it will still grip.
You monster
Being out at lunch time, pushed it, no rubbing or knocking of any kind.
Though rear caliper did start to stick, got a little carried away.
No way too much, I dislike arch gap, I am not try to smuggle immigrants in and out the country.
I like my car to have a GT3 RS style ride height / arch gap profile:
That to me is perfect, I just do the opposite way, front is 1 finger, rear is 2-3 fingers due to a muscle car should always be higher at the rear for the stance. Whereas GT3, M3 are always lower at the rear.
Once I get the correct spacers on the car it should be fine, in a perfect world I would maybe tweak the front up 3-5mm, but it so close just millimetres.
Though rear caliper did start to stick, got a little carried away.
No way too much, I dislike arch gap, I am not try to smuggle immigrants in and out the country.
I like my car to have a GT3 RS style ride height / arch gap profile:
That to me is perfect, I just do the opposite way, front is 1 finger, rear is 2-3 fingers due to a muscle car should always be higher at the rear for the stance. Whereas GT3, M3 are always lower at the rear.
Once I get the correct spacers on the car it should be fine, in a perfect world I would maybe tweak the front up 3-5mm, but it so close just millimetres.
Yea, it just seems from that pic the front is a *tad* too low, so yea, 5 mm or 1/4 inch
The small pic won't be doing any favours at the big Mustang meet next weekend, hopefully the sun will be shining and I can get some proper high-res photos done with a proper camera.