Don’t try to figure. Just use up the old stuff you have and start buying new. Once on hand inventories are depleted there won’t be a choice. The larger tracks in my area have already run out of stock. Some of the smaller club tracks still have old stock. All have a planned transition in place and posted for everyone to know.
Are you 100% sure they are done producing them? I am taking this information to our track so they can make the decision to either start the year on the SH1 or SH2. They are looking into it too but the more informed they are the better.
Can anyone verify price? The MG website shows the SH2 as a few $ less the SH1 but that seems odd as prices always go up.
I am not 100% sure about anything in life anymore, but when a tire goes through a homologation, the manufacturer has not historically kept producing the old ones. I see absolutely no reason why MG would here either.
Prices in our area are negligibly different.
3 Likes
Derek, any update on this? How does the new compound perform across the first few heat cycles and beyond?
So far, they seem very consistent. I have put about 20 heat cycles on mine and feel like they have been consistent and/or gradual in their fall off. Even the feature race last week, I still had plenty of grip. I really have no idea how far they will go, but I am bolting on some fresh rubber for a one off race this weekend, so I guess we’ll see how much faster those new ones are right away.
2 Likes
MCC? or Newcastle? I will be at MCC
SIRA at CERAland. Its 5 minutes from my house and I want to see SIRA succeed.
2 Likes
@Ronald_Swift Get over here and run SIRA Saturday then hit MCC Sunday.
Wife would kill me, I am racing like the next 5 weekends and I am leaving for like 5 days in 2 weeeks…
Hi all, I had an odd issue on MG Reds SH2 this past weekend. It was 54 degrees and overcast, the set had three or four cycles on it, 13.5 psi. I went out for practice and had one session where there was a lot of traffic, so I didn’t get a clean lap in. About an hour later I went back out in similar conditions at the same tire pressure with no setup changes. The kart felt normal over the first few laps, but as the tires came up to temperature, the rear started feeling odd, almost like a loose wheel or the sidewall was rolling over when I was putting any load in it, it felt so odd that I thought something might be loose and came off the track, I checked the wheels and hubs and everything was normal. I had run the exact wheels and tires in the previous session and last weekend for two sessions and they felt great, no issues at all. I achieved a decent lap time, 0.3 off my personal best ever, but the feeling was very odd, has anyone ever experienced this on the SH2s?
From what I’ve gathered, 13.5 is quite high for SH2s. Maybe it got overheated and greasy?
I will try lower pressures, but if it was overheating the same thing would have happened on the previous run, no? Also, last weekend it was a few degrees warmer and the tire did not behave this way at 12 or 13 psi.
Can you elaborate further on this? What is the lowest you can go and keep the tire from rolling over?
Given the tire is new and I’m racing this year, I won’t give out all the secrets but I know 13.5 is what we ran on the old tires and these new tires are significantly softer. On a 206 I wouldn’t be worried about the tire rolling over.
Everything I’ve heard from the opening national races is that people are running much lower than the old tires.
I don’t mind sharing chassis setup stuff, but tires are voodoo and I need every tidbit of advantage I can get this year 
7 Likes
I’m hearing that running two classes, the tires need replaced after two race days locally here. If you practice a lot, you’re a new tire per race candidate.
Was everything truly the same as the previous session?
Track temp? Sunshine? Amount of rubber down?
It’s not just apples to apples. It’s gotta be Granny Smith to Granny Smith.
1 Like
That jerk that won 2 classes last night had about 250 laps on his tires.
I’ve been lied to. 
He’s obviously cheating, tho.
It was a bit sunnier. I guess the overheating theory would explain why everything felt normal for the first three laps. If something was very loose or not bolted down I would have felt it sooner. About how much less pressure are you finding the new compound requires?
Run them between .70 to .75 bar (i think that’s 10 - 11psi). Thank me later 
EDIT: Aim at achieving .90 bar warm in the rear tire which is the most under stress (usually rear left)
2 Likes