SLM's annual report describes a company built around import substitution. Pakistan had no local all-steel radial truck and bus tyre capacity when the project was conceived. By June 2026, Service Long March Tyres Limited reported installed capacity of 2.0 million tyres a year, FY2026 sales volume of 1.63 million tyres, and a 62% domestic TBR market share.
That sounds like a straightforward import-substitution story. It is, but only at the finished-product layer.
The more useful question is one step deeper: what does a local tyre factory still have to buy from abroad?
The finished tyre can be local while the cost chain remains global
SLM's FY2026 value-chain disclosure says natural rubber is sourced from Thailand and Malaysia. Carbon black, steel cord and chemicals come from China and domestic vendors. In its risk analysis, the company says natural rubber is about 40% of the purchase basket, while carbon black, steel cord and chemicals are largely imported.
These are company-reported facts.
The named inference is that replacing an imported finished tyre does not remove every foreign-exchange channel inside the manufacturing process.
The mechanism is:
finished-tyre imports displaced → domestic production → imported production inputs remain → PKR and global commodity movements reach input costs → procurement and pricing determine how much reaches margins
This is why import substitution and import independence are not the same thing.
What SLM has actually localised
SLM's company profile says its founding strategy was to establish local all-steel radial TBR production. Commercial production began in March 2022. Installed capacity moved from 740,000 tyres a year at first production to 1.3 million and then 2.0 million by June 2026.
For FY2026, the company reported PKR 71.7 billion of net revenue, PKR 13.5 billion of profit after tax and 1.63 million tyres sold. PSX's FY2026 financial page independently displays sales of PKR 71.709 billion and profit after tax of PKR 13.529 billion.
The industrial change is real: Pakistan now has domestic production capacity for a product that SLM says was entirely imported when the project was conceived.
But this tells us where the final manufacturing step happens. It does not tell us that every upstream material has also been localised.
Where the dollar can still enter the mechanism
The annual report identifies currency as a financial risk because imported inputs sit against PKR revenue. It reports a net USD asset exposure of US$12.8 million at year end and says, in its sensitivity disclosure, that a 5% PKR movement would alter profit by approximately PKR178 million, all else equal.
That sensitivity is a company disclosure, not a forecast. Actual results can differ because export receipts, forward bookings, purchasing decisions, selling prices, volumes and commodity prices can move at the same time.
The company also describes a natural hedge from exports and forward bookings as risk mitigants. That matters because the transmission is not simply “rupee weakens, profit falls.” Export-linked foreign currency can offset part of the exposure, and price increases can pass part of an input shock to customers.
A better analytical chain is therefore:
exchange rate / commodity price → landed input cost → hedge and procurement effects → selling-price response → volume response → gross margin
Each stage can change the final outcome.
Why natural rubber deserves attention
SLM identifies natural rubber as roughly 40% of its purchase basket. That makes it a useful operating variable to follow, but not in isolation.
A lower international rubber price can reduce pressure on the raw-material basket. A weaker PKR can offset some of that benefit when the material is imported. Freight, inventory timing and forward coverage can also delay or reshape when a market-price change reaches reported cost of sales.
This is why a commodity chart alone is not enough. The relevant question is the landed rupee cost and how quickly it moves through inventory and pricing.
The market and sector transmission
For the tyre sector, domestic manufacturing changes the competitive structure. Local producers can avoid some of the freight and lead-time disadvantages attached to importing finished tyres, while dealer coverage, warranty, product availability and regulation also affect competition.
At the same time, imported inputs mean local manufacturers can still share some of the same global cost shocks as foreign producers. The location of final assembly changes the transmission mechanism; it does not isolate the company from the world market.
For SLM specifically, the annual report also notes that regulatory duty on imported TBR tyres was cut from 20% to 16%. That introduces another channel: lower protection for the finished product can increase competitive pressure even while the company's own raw-material basket remains globally exposed.
What would weaken this interpretation?
The mechanism would matter less if SLM materially localised its major raw materials, increased effective natural hedging through exports, locked in favourable input costs, or demonstrated enough pricing power to pass through exchange-rate and commodity shocks without materially affecting volumes.
It would matter more if imported-input dependence increased, the PKR weakened sharply without offsets, global raw-material prices rose, or competitive conditions prevented price pass-through.
This is why the correct conclusion is not that foreign-exchange movements automatically determine SLM's earnings. The evidence supports a narrower statement: foreign-exchange and global input prices remain part of the company's cost mechanism despite local production of the finished tyre.
What to watch
For the next reporting periods, the useful checks are:
- PKR movements against the currencies used for imported inputs;
- natural-rubber and other major raw-material prices;
- imported versus domestic sourcing mix;
- export receipts and disclosed hedging/forward coverage;
- selling-price changes;
- gross margin;
- domestic and export tyre volumes; and
- any further localisation of the input chain.
The broader research habit is simple: when a company is described as an import-substitution business, do not stop at the finished product. Trace the inputs.
Primary sources
- Service Long March Tyres Limited, Annual Report 2025-26, company-issued annual report.
- Pakistan Stock Exchange, SLM company page and FY2026 financial results: https://dps.psx.com.pk/company/SLM
- Pakistan Stock Exchange / SECP-approved SLM Prospectus: https://www.psx.com.pk/psx/themes/psx/uploads/Notice-for-Public-Comments-SLM.pdf
- Pakistan Stock Exchange PRIDE, Service Long March Tyres Limited listing record: https://www.psx.com.pk/psx/pride/main-board/service-long-march-tyres-limited
Education and analysis only. This article does not provide investment advice, a recommendation, a price target, or an expected return.